Help !!

Gosh,just back from tuition n I realise my maths reali .... POOR !!!
-sob sob-
I dun even knw how to do statistics,such an easy chapter it is !
Going go learn a new chapter , its much more harder ..
I cant catch up with it d..
OMG OMG ~~
Im worry abt that !
Anyone could help me? lolz
Poor viyen......