diff --git a/src/cpp/include/trainWindow.h b/src/cpp/include/trainWindow.h
new file mode 100644
index 0000000..d8491a5
--- /dev/null
+++ b/src/cpp/include/trainWindow.h
@@ -0,0 +1,8 @@
+#pragma once
+
+
+#include <QMainWindow>
+
+extern QMainWindow *trainWindow;
+
+void initTrainWindow();
diff --git a/src/cpp/qtapp/.cache/clangd/index/main.cpp.6DE93E662B25E657.idx b/src/cpp/qtapp/.cache/clangd/index/main.cpp.6DE93E662B25E657.idx
index 1d9bd4f..f2fa273 100644
Binary files a/src/cpp/qtapp/.cache/clangd/index/main.cpp.6DE93E662B25E657.idx and b/src/cpp/qtapp/.cache/clangd/index/main.cpp.6DE93E662B25E657.idx differ
diff --git a/src/cpp/qtapp/CMakeLists.txt b/src/cpp/qtapp/CMakeLists.txt
index 0e0c272..31b450d 100644
--- a/src/cpp/qtapp/CMakeLists.txt
+++ b/src/cpp/qtapp/CMakeLists.txt
@@ -15,6 +15,7 @@ find_package(Qt5 COMPONENTS Widgets REQUIRED)
 add_executable(
 	MdemoryApp
     main.cpp
+	trainWindow.cpp
 )
 
 target_link_libraries(MdemoryApp Qt5::Widgets api)
diff --git a/src/cpp/qtapp/main.cpp b/src/cpp/qtapp/main.cpp
index b9aa857..5f49a18 100644
--- a/src/cpp/qtapp/main.cpp
+++ b/src/cpp/qtapp/main.cpp
@@ -5,7 +5,11 @@
 #include <qabstractbutton.h>
 #include <qlabel.h>
 #include <qlayoutitem.h>
+#include <qmainwindow.h>
 #include <qobjectdefs.h>
+#include <qtoolbutton.h>
+#include <qwindow.h>
+#include <qwindowdefs.h>
 #include <regex>
 #include <string>
 
@@ -27,10 +31,12 @@
 #include <QRegularExpression>
 #include <QStringList>
 #include <QListView>
+#include <QWindow>
 #include <qabstractitemmodel.h>
 
 #include "api.h"
 #include "parser.h"
+#include "trainWindow.h"
 
 struct Page {
     int start;
@@ -130,23 +136,28 @@ public:
 };
 
 
-QString                workingPath   = "/home/jorenchik/Code/mdemory/memorybase";
-QList<Mdem*>           mdems         = QList<Mdem*>();
-std::vector<Question*> questions     = std::vector<Question*>();
-QLabel                *deckListLabel;
-QVBoxLayout           *hMdemScroll;
-QSpacerItem           *mdemSpacer;
+QString                 workingPath   = "/home/jorenchik/Code/mdemory/memorybase";
+std::string             currentPath   = "";
+QList<Mdem*>            mdems         = QList<Mdem*>();
+std::vector<Question*>  questions     = std::vector<Question*>();
+QLabel                 *deckListLabel;
+QVBoxLayout            *hMdemScroll;
+QSpacerItem            *mdemSpacer;
 
 const int              PER_PAGE      = 8;
 int                    currentPage   = -1;
 std::vector<Page>      pages;
+QList<QToolButton*>    paginationButtons;
 QToolButton*           prevButton;
 QToolButton*           firstButton;
 QToolButton*           lastButton;
 QToolButton*           nextButton; 
-QList<QToolButton*>    paginationButtons;
 QLabel*                paginationLabel;
 
+QToolButton            *load;
+QToolButton            *practice;
+
+
 const std::regex doubleSpaceExp(
 	"  ",
 	std::regex_constants::ECMAScript | std::regex_constants::icase
@@ -313,6 +324,35 @@ void SwitchPage(int pageIdx) {
     CreateMdems(pageSlice);
 }
 
+void loadMdem() {
+	auto file = std::ifstream(currentPath);
+	std::string content;
+	if (file) {
+		std::stringstream buffer;
+		buffer << file.rdbuf();
+		content = buffer.str();
+		auto parseRes = Transpile(content, true);
+		for (auto question: questions) {
+			delete question;
+		}
+		questions.clear();
+		if (parseRes.error == "") {
+			questions = parseRes.value;
+			makePages();
+			SwitchPage(0);
+		} else {
+			std::cout << "Compilation error." << std::endl;
+			for (auto mdem: mdems) {
+				if (mdem->wMdem->isVisible()) {
+					mdem->wMdem->hide();
+				}
+			}
+		}
+	} else {
+		std::cout << std::format("Could not open the file: {}", currentPath) << std::endl;
+	}
+}
+
 int main(int argc, char *argv[]) {
     QApplication app(argc, argv);
     QMainWindow window;
@@ -331,30 +371,16 @@ int main(int argc, char *argv[]) {
     leftWidget->setLayout(leftLayout);
     leftLayout->addWidget(mdemLabel);
     model->setRootPath(workingPath);
+	// Hide all columns except the first one
     mdemList->setModel(model);
+
 	QObject::connect(
 			mdemList,
 			&QTreeView::doubleClicked,
 			[model](const QModelIndex &index) {
 				auto fileInfo = model->fileInfo(index);
-				auto path = fileInfo.filePath().toStdString();
-				auto file = std::ifstream(path);
-				std::string content;
-				if (file) {
-					std::stringstream buffer;
-					buffer << file.rdbuf();
-					content = buffer.str();
-					auto parseRes = Transpile(content, true);
-					for (auto question: questions) {
-						delete question;
-					}
-					questions.clear();
-					questions = parseRes.value;
-					makePages();
-					SwitchPage(0);
-				} else {
-					std::cout << std::format("Could not open the file: {}", path) << std::endl;
-				}
+				currentPath = fileInfo.filePath().toStdString();
+				loadMdem();
 			}
 	);
 
@@ -362,8 +388,13 @@ int main(int argc, char *argv[]) {
 		"/home/jorenchik/Code/mdemory/memorybase"
 	);
     mdemList->setRootIndex(rootIndex);
+    for (int col = 1; col < model->columnCount(); ++col) {
+        mdemList->hideColumn(col);
+    }
+    model->setHeaderData(0, Qt::Horizontal, QObject::tr("Custom Name"));
     leftLayout->addWidget(mdemList);
 
+
     // DeckList 
     QLabel    *deckLabel = new QLabel("Decks");
     QListView *deckList  = new QListView();
@@ -384,18 +415,16 @@ int main(int argc, char *argv[]) {
     hTop->addWidget(deckListLabel);
     hTop->addStretch(1);
 
-    QToolButton *refresh  = new QToolButton();
-    QToolButton *practice = new QToolButton();
-    QToolButton *shuffle  = new QToolButton();
+    load  = new QToolButton();
+    practice = new QToolButton();
 
-    hTop->addWidget(refresh);
-    hTop->addWidget(shuffle);
+    hTop->addWidget(load);
     hTop->addWidget(practice);
 
     // Buttons
-    refresh->setText("Refresh");
-    shuffle->setText("Shuffle");
+    load->setText("Load");
     practice->setText("Practice");
+	QObject::connect(load, &QToolButton::clicked, &loadMdem);
 
     // Mdems
     QScrollArea *mdemScroll    = new QScrollArea();
@@ -477,7 +506,17 @@ int main(int argc, char *argv[]) {
     hPagination->addWidget(paginationLabel);
 	rightLayout->addWidget(pagination);
 
+	initTrainWindow();
+	QObject::connect(
+		practice,
+		&QToolButton::clicked,
+		[](bool checked) {
+		trainWindow->show();
+		trainWindow->resize(600, 300);
+	});
+
     window.setCentralWidget(hSplitter);
     window.show();
+
     return app.exec();
 }
diff --git a/src/cpp/qtapp/trainWindow.cpp b/src/cpp/qtapp/trainWindow.cpp
new file mode 100644
index 0000000..6f01a59
--- /dev/null
+++ b/src/cpp/qtapp/trainWindow.cpp
@@ -0,0 +1,237 @@
+#include <QMainWindow>
+#include <QWidget>
+#include <QToolButton>
+#include <qboxlayout.h>
+#include <qlabel.h>
+#include <qlistview.h>
+#include <qnamespace.h>
+#include <qstandarditemmodel.h>
+#include <qstringlistmodel.h>
+#include <qtoolbutton.h>
+#include <Qt>
+#include <qwidget.h>
+#include <QStandardItemModel>
+#include <QDropEvent>
+
+#include "trainWindow.h"
+
+QWidget     *wMaster;	
+QVBoxLayout *hMaster;
+
+QWidget     *questionBox;	
+QVBoxLayout *vQuestionBox;
+QLabel      *lQuestionText;
+QLabel      *answerText;
+
+QVBoxLayout *vButtonBox;
+QWidget     *actionButtons;
+QHBoxLayout *hButtons;
+QToolButton *btnPrev;
+QToolButton *btnShowAnswer;
+QToolButton *btnNext;
+
+QMainWindow *trainWindow;
+QWidget     *trainWidget;
+QVBoxLayout *vTrainWidget;
+
+class CustomListView : public QListView
+{
+    Q_OBJECT
+
+public:
+    explicit CustomListView(QWidget *parent = nullptr) : QListView(parent) {}
+
+protected:
+    void dropEvent(QDropEvent *event) override
+    {
+        QModelIndex sourceIndex = currentIndex();
+        QModelIndex targetIndex = indexAt(event->pos());
+
+        if (sourceIndex.isValid() && targetIndex.isValid()) {
+            QStandardItemModel *model = qobject_cast<QStandardItemModel *>(this->model());
+            if (model) {
+                QVariant sourceData = model->data(sourceIndex);
+                QVariant targetData = model->data(targetIndex);
+                model->setData(sourceIndex, targetData);
+                model->setData(targetIndex, sourceData);
+                event->ignore();
+            }
+        } else {
+			event->ignore();
+        }
+    }
+};
+#include "trainWindow.moc"
+
+void initTrainWindow() {
+    // # Types of question
+	//
+    // - AnswerQuestion:
+    //  	One answer (could be on multiple lines).
+    // - ChoiceQuestion:
+    //      One or many correct answers that are showed to user.
+    // - OrderQuestion:
+	//      Many items that should be ordered in a list.
+    // - MatchQuestion:
+	//      Match some items to other items.
+
+    trainWindow  = new QMainWindow();
+	trainWidget  = new QWidget();
+	vTrainWidget = new QVBoxLayout();
+
+	/*wMaster       = new QWidget();*/
+	/*hMaster       = new QVBoxLayout();*/
+	trainWidget->setLayout(vTrainWidget);
+    trainWindow->setCentralWidget(trainWidget);
+	trainWidget->setLayout(vTrainWidget);
+	vTrainWidget->setAlignment(Qt::AlignCenter);
+	trainWidget->setObjectName("answer-question-widget");
+
+	{ // Make the question box.
+		vQuestionBox  = new QVBoxLayout();
+		questionBox   = new QWidget();
+		questionBox->setLayout(vQuestionBox);
+		questionBox->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
+		vQuestionBox->setAlignment(Qt::AlignCenter);
+	}
+
+	{ // Make question text. 
+		lQuestionText = new QLabel();
+		lQuestionText->setText("What is the capital of Latvia?");
+		lQuestionText->setWordWrap(true);
+		lQuestionText->setStyleSheet(QString(
+			"QLabel {"
+				"font-size: 20px;"
+			"}"
+		));
+		lQuestionText->setTextInteractionFlags(Qt::TextSelectableByMouse);
+		vQuestionBox->addWidget(lQuestionText);
+	}
+
+	{ // Make answer text.
+		answerText = new QLabel();
+		answerText->setText("- Riga\n- Second line");
+		answerText->setWordWrap(true);
+		answerText->hide();
+		answerText->setStyleSheet(QString(
+			"QLabel {"
+				"font-size: 15px;"
+			"}"
+		));
+		answerText->setTextInteractionFlags(Qt::TextSelectableByMouse);
+		vQuestionBox->addWidget(answerText);
+	}
+
+
+	auto listStyle = 
+			"QListView {"
+			"   background-color: white;"
+			"   border: 1px solid black;"
+			"}"
+			"QListView::item::first {"
+			"   padding: 5px 0 0 0;"
+			"}"
+			"QListView::item {"
+			"   color: blue;"
+			"   padding: 5px;"
+			"   border: 1px solid gray;"
+			"   background-color: white;"
+			"}"
+			"QListView::item:selected {"
+			"}"
+			"QListView::item:hover {"
+			"   background-color: lightyellow;"
+			"}";
+
+	{ // Make multi-choice list.
+		auto *multiChoiceModel = new QStandardItemModel();
+		QListView *listView = new QListView();
+		listView->setModel(multiChoiceModel);
+
+		auto *firstItem = new QStandardItem(); 
+		firstItem->setText("Item 1");
+		firstItem->setCheckable(true);
+		auto *secondItem = new QStandardItem(); 
+		secondItem->setText("Item 2");
+		secondItem->setCheckable(true);
+		multiChoiceModel->setItem(0, firstItem);
+		multiChoiceModel->setItem(1, secondItem);
+
+		listView->setStyleSheet(listStyle);
+
+		questionBox->layout()->addWidget(listView);
+		listView->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
+		listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
+	}
+
+	{ // Make order list.
+		auto *orderModel = new QStandardItemModel();
+		QListView *orderList = new CustomListView();
+		orderList->setModel(orderModel);
+
+		auto *firstItem = new QStandardItem(); 
+		firstItem->setText("Item 1");
+		auto *secondItem = new QStandardItem(); 
+		secondItem->setText("Item 2");
+		auto *thirdItem = new QStandardItem(); 
+		thirdItem->setText("Item 3");
+		orderModel->setItem(0, firstItem);
+		orderModel->setItem(1, secondItem);
+		orderModel->setItem(2, thirdItem);
+		 
+
+		questionBox->layout()->addWidget(orderList);
+		orderList->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
+		orderList->setEditTriggers(QAbstractItemView::NoEditTriggers);
+		orderList->setDragDropMode(QAbstractItemView::InternalMove);
+		orderList->setFocusPolicy(Qt::NoFocus);
+
+		orderList->setStyleSheet(listStyle);
+
+		// Connect to handle the drop event properly
+		QObject::connect(
+			 orderModel,
+			 &QStandardItemModel::rowsMoved,
+			 [orderModel](const QModelIndex &, int sourceRow, int, const QModelIndex &, int destinationRow) {
+			     if (sourceRow != destinationRow - 1) {
+					 auto *movedItem = orderModel->takeItem(sourceRow);
+					 orderModel->insertRow(destinationRow > sourceRow ? destinationRow - 1 : destinationRow, movedItem);
+				 }
+			}
+		);
+	}
+
+	{ // Make buttons menu. There are left middle and right buttons.
+		vButtonBox    = new QVBoxLayout();
+		actionButtons = new QWidget();
+		hButtons      = new QHBoxLayout();
+		btnPrev       = new QToolButton();
+		btnShowAnswer = new QToolButton();
+		btnNext       = new QToolButton();
+
+		hButtons->addWidget(btnPrev);
+		hButtons->addWidget(btnShowAnswer);
+		hButtons->addWidget(btnNext);
+		vButtonBox->addWidget(actionButtons);
+		actionButtons->setLayout(hButtons);
+		btnPrev->setText("Previous");
+		btnShowAnswer->setText("Show answer");
+		btnNext->setText("Next");
+		QObject::connect(btnShowAnswer, &QToolButton::clicked, [](bool checked) {
+			answerText->show();
+			btnShowAnswer->hide();
+		});		
+		actionButtons->setStyleSheet(QString(
+			"QToolButton {"
+				"padding: 4px 5px;"
+				"font-size: 15px;"
+			"}"
+		));
+		questionBox->setObjectName("question-box");
+	}
+
+
+	vTrainWidget->addWidget(questionBox);
+	vTrainWidget->addWidget(actionButtons);
+	vTrainWidget->addWidget(wMaster);
+}
diff --git a/src/cpp/transpiler/.cache/clangd/index/parser.cpp.1DA6C31FD012A889.idx b/src/cpp/transpiler/.cache/clangd/index/parser.cpp.1DA6C31FD012A889.idx
index 8e42f30..f1ff536 100644
Binary files a/src/cpp/transpiler/.cache/clangd/index/parser.cpp.1DA6C31FD012A889.idx and b/src/cpp/transpiler/.cache/clangd/index/parser.cpp.1DA6C31FD012A889.idx differ