I think suggestion #3 was mean to be "3 Look Last Layer" or 3 Look LL.



You must first learn the 4 look last layer before you can get to the 3 look.



But I wouldn't start there. If I were you, I'd learn F2L for the first two layers first, keeping your current last layer solving technique in place. Then, once you can do F2L reliably and are gaining confidence and speed with it, begin learning the 4 look last layer.



F2L is where you are going to make the really big wins IMHO.



Finally, PLL and OLL are both part of the 4 look or 3 look LL. You'll learn all 21 PLLs in order to have a 3 look LL. You'll learn 10 of the 57 OLLs for the 4 look LL, and you'll keep them for your 3 look LL. If you decide that you want a 2 look LL, you'll need to learn all 57 OLLs.



I'm currently not fast enough to think that learning all the OLLs will help my times. I need to concentrate on other areas first.



Brian.