FUCK SERIES!! FUCK THEM!!!
I know the pain. But if you take some time to dissect them, it's very rewarding and it actually makes a lot of sense (and becomes easy).
Being in Calc BC, I actually have to do series...not sure what to expect.
I'd say expect some WTF moments in the beginning. You'll probably ask yourself "How in the heck is this calculus? Where are the derivatives and integrals?" At least, that is what I thought for a long time even after learning them.
But what makes it calculus, from what I understand, is you are pretty much always adding up infinite terms using finite notation. Calculus deals with limits and infinitesimals, getting down to the smallest of numbers that still apply to a problem. Series are just infinite sums, and they have some special properties of convergence and divergence. Actually, you CAN differentiate/integrate them, but when I learned about them that wasn't emphasized much at all.