docs: links section added

docs/developer/introduction/introduction.md

@@ -12,4 +12,5 @@ hidden: false
 
 concepts/
 contributing/
+useful_links/
 ```

docs/developer/introduction/useful_links.md

@@ -0,0 +1,23 @@
+(developer.useful_links)=
+
+# Useful Links
+
+If you're new to the Qt framework, here are some helpful resources to get you started. In BEC Widgets, we use Qt
+distributions based on Qt6, specifically PyQt6 and PySide6. However, all code should be written using
+the [`qtpy`](https://pypi.org/project/QtPy/) abstraction layer, which allows compatibility with both. While both PyQt6
+and PySide6 are supported, we prefer PySide6 as it is the official Python binding from the Qt Company. It offers
+advantages like bundling all necessary libraries in a single package with pip installation and staying more up-to-date
+compared to PyQt6.
+
+Below is a list of useful links to help you start developing with Qt and QtDesigner:
+
+- [Python GUIs](https://www.pythonguis.com): A great resource with tutorials and examples for creating GUIs in Python
+  using various frameworks.
+- [PySide6 Quick Start Guide](https://doc.qt.io/qtforpython-6/index.html): The official documentation for PySide6,
+  including quick start guides and tutorials.
+- [QtDesigner Official Documentation](https://doc.qt.io/qt-6/qtdesigner-manual.html): Comprehensive documentation for
+  QtDesigner.
+- [Simple PyQt Tutorial from RealPython](https://realpython.com/python-pyqt-gui-calculator/): A beginner-friendly
+  tutorial on creating your first GUI application with PyQt.
+- [PyQtGraph Documentation](https://pyqtgraph.readthedocs.io/en/latest/): BEC Widgets relies on PyQtGraph for plotting;
+  this is the official documentation.