donno wat to study

hais y i so stupid wan??y other ppl so clever??y so unfair??final is coming...nope is around the corner liao...but i donno wat to study and donno where to start.....can anyone help me??even i study ady but still donno wat i study and my brain donno y cant remember stuff wan.......so sad, read dy= never read....anyone can teach me how to memorise thing clever and faster....i sit infront of the note but i donno wat to study first and i donno wat is the note talk about.......somemore when i start reading my note n textbook,i feel vvvvv sleepy+i cant tahan sleepy then i go sleep...u c how i wan to study...if anyone got a good idea for me pls teach me how to study n can tahan sleepy lo......