So.. any idea on how i could learn all those long algorithms? I'v tried to learn 1 OLL but i forgotten the algorithm the next day. Any tips from the experts?

God! And you are planning to sit for your exams...
Learn the
short ones first, then.
Short ones... that can be good. Thanks!
Btw wads the diff between OLL and 2 look OLL?
both are OLLs

2 look means u solve the OLL phase in 2 algo or 2 steps . u orient the edges first , then the corners .
where OLL will do everything in 1 algo or steps . edges and corners together .
hah , pros correct me if im wrong . my puzzle theory is kampong version de

You are right.
2-look OLL is a beginner's version of full OLL, used before the cuber is able to master all 57 OLL cases. Instead of during a full last layer orientation in 1 algorithm, the cuber would do 2; 1 to orientate edges(the 'cross'), then proceed to finish off the orientation step in 1 more algorithm.