Since Windows and macOS do not always support .rar files natively, you will need a third-party tool:

: Click the download link for the resource. Files are frequently compressed into .rar or .zip formats to keep multiple documents together. Step 2: Install a RAR Extractor

: If you downloaded programming exercises, you can open the .py files in an editor like VS Code or PyCharm.

: Browse through the "TDs" (Travaux Dirigés) or "Correction des Concours" sections to find the specific files you need (e.g., Python exercises or Engineering portal materials).

: Go to your "Downloads" folder and find the file you downloaded from the portal.

: Open the resulting folder to find your Python scripts, PDFs, or study guides. Step 4: Using the Materials