Learn the races inside and out? How much is there to learn? You pretty much just dump all your stat points into one stat, and when people talk about their "builds" they are mostly common sense. If you look at a "build" for any specific class they're all like 90% the same, as in all vit dekans are practically the same, all str guardians practically the same, all temps practically the same, etc. You end up with most of your skills being the obvious best choices and a couple skills people are going to argue back and forth take x or take y but over all impact is really minimal. Even if you don't know the exact coding behind every skill, as most players don't, its really not that hard to figure out whats the best when blunt mastery is doing so much more damage then what anything else does your silly for playing other things.
A game like this the only learning curve is learning to play as a team, but currently all that really amounts to is your on a templar destroying everything, or on a support toon supporting said templar to keep him alive longer. There is no real tactics involved anymore.