I finally got this guide out, so I wanted to share it. The graphical aspect is not nice for now, but this is only version 1, I hope to improve it.
Every comment is mostly appreciated, especially from people struggling at noble or lower level: about aspects not clear, or things difficult to do... I tried it to be sure (especially about stuffs such as automation), but since I usually play at monarch or emperor, some things that are clear for me are obviously not for lesser level players.
Just remember that my goal is to have something simple and straightforward, not to detail everything about city placement or other stuffs like that
Thanks in advance for all your critics !