Birth Control pills??

Kelaiah
I've never had to even think about birth control, but with my periods being as painful as they are, I'm leaning towards taking things into my own hands. So I'm really curious about the dreaded pill. How does it work? Does it work 100% of the time? How often do you take it? Why does it make periods magically easier and I've heard you can skip the occasional period with it?? yelp help me