I created a very long post summarizing the first part of the book. Unfortunately the renderer of this page doesn’t manage to correctly display the collapsibles I used.

Therefore, you can watch it directly on Github where the rendering is fine:

https://github.com/GeertJan-Kuip/GeertJan-Kuip.github.io/blob/main/_posts/2026-03-29-cheat-sheet-1Z0-819.md

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