How to study for gmate in 10 days

What's gmate ?

Do you mean the GMAT?

You sit down and study, take notes, underline, review just before you go to sleep.
But if you can't spell it I have a feeling you won't score very high.

Why is this under Laptops, and why is your desire to learn guitar in 2 months under Emotional Wellbeing? And how are you going to do both, if they are both so urgent?
Are you just asking questions for a fun of it?