Following Alessio’s request I have tried to write something in Google Docs.
Feel free to modify or add what you want everybody who got the link below
can comment and/or modify.
Here the link:
https://docs.google.com/document/d/1cF8o_5r3Q-RaplXylZ3UcF4zaURrtIPzpzvdMiaG3OU/edit?usp=drive_web
Hope this could be useful.