Maybe you have read the official Elite Dangerous manual.... if not: no loss.
I simply would like to point out a game guide which is alot better than the official manual. Everything is explained much better, with lots of visuals and examples.
Lots of stuff simply is explained in a much clearer way... and truely from the players perspective, with hints and game experiences.
When ive originally read the offical game manual the decriptions in there caused even more questions which were left unanswers.
When reading this game guide I felt like understanding how this game works due to the detailed explanations and the extra info about game mechanics and the Elite universe.
In my eyes a guide you should read when you play the game or when you want to know if this game is something for you.