question Where to start?

That's a big question! Start by reading everything here:

https://www.namepros.com/threads/popular-beginner-discussions.844937/

If you have questions after that, post them in the forum. It takes time to even begin to learn what you're doing. Read a lot, ask questions, and then read some more.

You can search on this forum, there's many threads about this topic before.

Thanks @Joeguy1014 for the link