diff --git a/dialogs/helpdialog.cpp b/dialogs/helpdialog.cpp
index 5406c43..912dedd 100644
--- a/dialogs/helpdialog.cpp
+++ b/dialogs/helpdialog.cpp
@@ -5,12 +5,14 @@
 #include <QGroupBox>
 #include <QSettings>
 #include <QDir>
+#include <QDebug>
+
+#define HIDE_DIALOG_SETTING_KEY  "hideHelpDialog"
 
 HelpDialog::HelpDialog(const QString& path, const QString& page, QWidget* parent)
-    : QDialog(parent)
+    : QDialog(parent, Qt::WindowSystemMenuHint | Qt::WindowTitleHint)
 {
-    setWindowFlags(Qt::Tool);
-    setWindowTitle(tr("HOW TO USE REVERSCREEN"));
+    setWindowTitle(tr("HELP"));
 
     QTextBrowser* textBrowser = new QTextBrowser;
     textBrowser->setSource(QUrl(path + page));
@@ -18,10 +20,11 @@ HelpDialog::HelpDialog(const QString& path, const QString& page, QWidget* parent
     textBrowser->setTextInteractionFlags(Qt::NoTextInteraction);
 
     QCheckBox* checkBox = new QCheckBox(tr("Don't show this dialog again"));
+    connect(checkBox, &QCheckBox::toggled, this, &HelpDialog::checkBoxToggled);
     checkBox->setCheckState(Qt::Checked);
-    connect(checkBox, SIGNAL(toggled(bool)), this, SLOT(checkBoxToggled(bool)));
 
     QPushButton* closeButton = new QPushButton(tr("Close"));
+    connect(closeButton, QPushButton::clicked, this, &HelpDialog::reject);
 
     QHBoxLayout *buttonLayout = new QHBoxLayout;
     buttonLayout->addWidget(checkBox);
@@ -33,28 +36,18 @@ HelpDialog::HelpDialog(const QString& path, const QString& page, QWidget* parent
     mainLayout->addLayout(buttonLayout);
     setLayout(mainLayout);
 
-    connect(closeButton, SIGNAL(clicked()), this, SLOT(reject()));
- 
-    QSettings settings;
-    bool checked = settings.value("hideHelpDialog", true).toBool();
-    checkBox->setCheckState(checked ? Qt::Checked : Qt::Unchecked);
-
     setFixedSize(450, 300);
     move(parent->geometry().center() - geometry().center());
 }
 
-void HelpDialog::showPage(const QString& path, const QString& page, QWidget* parent)
+bool HelpDialog::canShowDialog()
 {
     QSettings settings;
-    bool hideHelpDialog = settings.value("hideHelpDialog", false).toBool();
-    if (!hideHelpDialog){
-        HelpDialog *helpDialog = new HelpDialog(path, page, parent);
-        helpDialog->exec();
-    }
+    return !settings.value(HIDE_DIALOG_SETTING_KEY, false).toBool();
 }
 
 void HelpDialog::checkBoxToggled(bool checked)
 {
     QSettings settings;
-    settings.setValue("hideHelpDialog", checked);
+    settings.setValue(HIDE_DIALOG_SETTING_KEY, checked);
 }
diff --git a/dialogs/helpdialog.h b/dialogs/helpdialog.h
index 65f470e..cbb2c02 100644
--- a/dialogs/helpdialog.h
+++ b/dialogs/helpdialog.h
@@ -12,7 +12,7 @@ class HelpDialog : public QDialog
 public:
     HelpDialog(const QString& path, const QString& page, QWidget* parent);
     
-    static void showPage(const QString& path, const QString& page, QWidget* parent);
+    static bool canShowDialog();
 
 private slots:
     void checkBoxToggled(bool);
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 81f2207..99287e3 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -360,14 +360,18 @@ void MainWindow::setupUi()
     _actionSave->setShortcut(QKeySequence("Ctrl+S"));
     _actionCrop = new QAction(_awesome->icon(fa::crop), tr("Crop"), this);
     _actionCrop->setShortcut(QKeySequence("Ctrl+X"));
+    _actionHelp = new QAction(tr("Help"), this);
+    _actionHelp->setShortcut(QKeySequence("F1"));
 
     addAction(_actionPaste);
+    addAction(_actionHelp);
 
     connect(_actionCapture, &QAction::triggered, this, &MainWindow::slotActionCapture);
     connect(_actionPaste, &QAction::triggered, this, &MainWindow::slotActionPaste);
     connect(_actionCopy, &QAction::triggered, this, &MainWindow::slotActionCopy);
     connect(_actionSave, &QAction::triggered, this, &MainWindow::slotActionSave);
     connect(_actionCrop, &QAction::triggered, this, &MainWindow::slotActionCrop);
+    connect(_actionHelp, &QAction::triggered, this, &MainWindow::slotActionHelp);
 
     // central widget
     _scrollArea = new QScrollArea(this);
@@ -537,6 +541,11 @@ void MainWindow::closeEvent(QCloseEvent *event)
     QMainWindow::closeEvent(event);
 }
 
-void MainWindow::slotActionHelp(){
-    HelpDialog::showPage("qrc:/docs","/usage_tips.html", this);
+void MainWindow::slotActionHelp()
+{
+    bool canShowHelp = (sender() == _actionHelp) || HelpDialog::canShowDialog();
+    if (canShowHelp) {
+        HelpDialog* helpDialog = new HelpDialog("qrc:/docs","/usage_tips.html", this);
+        helpDialog->exec();
+    }
 }
diff --git a/mainwindow.h b/mainwindow.h
index 3071636..265c0b1 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -97,5 +97,6 @@ private slots:
     QAction* _actionCopy;
     QAction* _actionSave;
     QAction* _actionCrop;
+    QAction* _actionHelp;
 };