Hi, i'm new and have no idea what i'm doing.
I read the guide and didn't really get it.
about the faction: do I just ask anyone or do only some take new people?

All factions should most likely take people. If you have a look at the factions website they should state their requirements and restrictions. The galactic Empire for example has a strict Humans only code.

Just throw in an application and get going.

Good luck and welcome to SWC,

What did you find unclear about the guide, other than that? We can try to explain and possibly correct issues that aren't worded clearly.