F2L is mainly intuitive, so you wouldn't need to memorize most of the algs. Once you understand the concept its really easy. Just try to do simple moves to pair the F2L pair up or into a three mover. I personally didn't memorize any F2L, once I understood the concept I caught on the idea.
You should learn PLL first as it only has 21 algs, taking on OLL can be quite a challenge.
Don't get discourage by other people who are faster than you, just try to beat your own records and improve over time