diff --git a/fixtracks/fixtracks.py b/fixtracks/fixtracks.py
index 4e0729e..e63adcb 100644
--- a/fixtracks/fixtracks.py
+++ b/fixtracks/fixtracks.py
@@ -1,23 +1,29 @@
 from PySide6.QtCore import QSize, Qt
 from PySide6.QtWidgets import QMainWindow, QWidget, QToolBar, QMenu, QMenuBar, QSizePolicy, QFileDialog
 from PySide6.QtWidgets import QDialog, QVBoxLayout
-from PySide6.QtGui import QKeySequence, QAction, QIcon
+from PySide6.QtGui import QKeySequence, QAction, QIcon, QPalette
 
-import fixtracks.resources
 from fixtracks.widgets.centralwidget import CentralWidget
 from fixtracks.dialogs.previewdialog import PreviewDialog
 from fixtracks.utils.reader import ImageReader, DataFrameReader
+from fixtracks.dialogs.about import AboutDialog
+from fixtracks.dialogs.help import HelpDialog
+import fixtracks.resources
+
+
 class MainWindow(QMainWindow):
-    def __init__(self):
+    def __init__(self, darkmode):
         super().__init__()
         self.create_actions()
-        self._toolbar = None
+        self._top_toolbar = None
+        self._side_toolbar = None
         cw = CentralWidget()
         self.setCentralWidget(cw)
+        self._iconsuffix = "_dark" if darkmode else "_light"
         # cw.exit_signal.connect(self.exit_request)
 
     def create_actions(self):
-        self._file_open_action = QAction(QIcon(":/icons/open"), "Open", self)
+        self._file_open_action = QAction(QIcon(":/icons/open" + self._iconsuffix), "Open", self)
         self._file_open_action.setStatusTip("Open nix file")
         self._file_open_action.setShortcut(QKeySequence("Ctrl+o"))
         self._file_open_action.triggered.connect(self.on_file_open)
@@ -103,7 +109,7 @@ class MainWindow(QMainWindow):
 
         # settings = QSettings(info.ORGANIZATION, info.NAME)
         # tb_orientation = settings.value("app/toolbar_area", "left")
-        # self.addToolBar(Qt.LeftToolBarArea if tb_orientation == "left" else Qt.TopToolBarArea, self._toolbar)
+        self.addToolBar(Qt.LeftToolBarArea if tb_orientation == "left" else Qt.TopToolBarArea, self._toolbar)
         # self._toolbar.topLevelChanged.connect(self.tb_changed)
         # del settings
 
@@ -123,10 +129,12 @@ class MainWindow(QMainWindow):
         dlg.exec()
 
     def on_about(self, s):
-        pass
+        about = AboutDialog(self)
+        about.show()
 
     def on_help(self, s):
-        pass
+        help = HelpDialog(self)
+        help.show()
 
     # @Slot(None)
     def exit_request(self):
diff --git a/fixtracks/info.py b/fixtracks/info.py
index a37d737..7678544 100644
--- a/fixtracks/info.py
+++ b/fixtracks/info.py
@@ -1,5 +1,10 @@
+import pathlib
 from packaging.version import Version
 
 organization_name = "de.bendalab"
 application_name = "FixTracks"
 application_version = Version("0.0.1")
+
+
+PACKAGE_ROOT = pathlib.Path(__file__).resolve().parent.parent
+DOCS_ROOT_FILE = pathlib.PosixPath.joinpath(PACKAGE_ROOT, "fixtracks", "docs", "index.md")
\ No newline at end of file
diff --git a/main.py b/main.py
index 6258675..0a71811 100644
--- a/main.py
+++ b/main.py
@@ -7,19 +7,37 @@ import platform
 import logging
 from PySide6.QtWidgets import QApplication
 from PySide6.QtCore import QSettings
-from PySide6.QtGui import QIcon
+from PySide6.QtGui import QIcon, QPalette
 
 from fixtracks import fixtracks, info
 
 logging.basicConfig(level=logging.DEBUG, force=True)
 
+
+def is_dark_mode(app: QApplication) -> bool:
+    palette = app.palette()
+    # Check the brightness of the window text and base colors
+    text_color = palette.color(QPalette.ColorRole.WindowText)
+    base_color = palette.color(QPalette.ColorRole.Base)
+
+    # Calculate brightness (0 for dark, 255 for bright)
+    def brightness(color):
+        return (color.red() * 299 + color.green() * 587 + color.blue() * 114) // 1000
+
+    return brightness(base_color) < brightness(text_color)
+
+
 # import resources  # needs to be imported somewhere in the project to be picked up by qt
 
 if platform.system() == "Windows":
     # from PySide6.QtWinExtras import QtWin
     myappid = f"{info.organization_name}.{info.application_version}"
     # QtWin.setCurrentProcessExplicitAppUserModelID(myappid)
-
+settings = QSettings()
+width = int(settings.value("app/width", 1024))
+height = int(settings.value("app/height", 768))
+x = int(settings.value("app/pos_x", 100))
+y = int(settings.value("app/pos_y", 100))
 app = QApplication(sys.argv)
 app.setApplicationName(info.application_name)
 app.setApplicationVersion(str(info.application_version))
@@ -29,13 +47,19 @@ app.setOrganizationDomain(info.organization_name)
 # icn = QIcon(":/icons/app_icon")
 # app.setWindowIcon(icn)
 # Create a Qt widget, which will be our window.
-window = fixtracks.MainWindow()
+window = fixtracks.MainWindow(is_dark_mode())
 window.setGeometry(100, 100, 1024, 768)
 window.setWindowTitle("FixTracks")
-# window.setWindowFlags(Qt.FramelessWindowHint)  # Remove window frame
-# window.setFixedSize(1024, 768)
-
+window.setMinimumWidth(1024)
+window.setMinimumHeight(768)
+window.resize(width, height)
+window.move(x, y)
 window.show()
 
 # Start the event loop.
 app.exec()
+pos = window.pos()
+settings.setValue("app/width", window.width())
+settings.setValue("app/height", window.height())
+settings.setValue("app/pos_x", pos.x())
+settings.setValue("app/pos_y", pos.y())