The Fridrich F2L? And I pretty much understand it, it is just some of the hard cases that I am not good at, such as when the two pieces are next to eachother. And I read that there are algorithms to use for those. Do you know the links to any web pages like that? And youtube is blocked for me.
And to answer your question pm6, keyhole is where you solve the bottom cross and three corners, and then using the empty corner solve all of the middle edge pieces.
2 look Oll is when you use two algorithms to orient, or flip the right way, all of the last layer. Pll is using two alorithms to permutate all of the last layer, or to put all of the peices in the correct place.