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Seen so many guides pop up lately, "Worlds best lvl guide to swtor" - "Best swtor PvP guide" etc. etc.
Don't buy into it.
You don't need any guide telling you some subpar build is the best possible build, and it's more likely that you won't learn much by just copying some build from a random on the internet.
You won't learn why you are setting your skill tree like that, which is half of understanding your class' mechanics, and possibly priority rotations.
If you truly want to be good at a game, you gotta play it, the more you play it, the better you get, like with anything else.
It's worth reading up on stuff, on one of the many community sites, places where people claiming to know a lot and don't, will get called out for it.
So don't buy any of those guides, it won't help you.
And also, I can tell you what's inside all of the "Make credits fast" guides.
Oh ye, and Buy low, sell high.