Don't multitask- Studies have shown that multitasking is physically impossible. Sleep- Don't underestimate the importance of those eight hours of zzz's every night! Getting a good night's rest will sharpen your focus and improve your working memory.
Take notes-Taking notes will not only keep you more engaged during class, but will also help you narrow down what you need to study when exam time rolls around. It's much easier to reread your notes than to reread your entire textbook!
Ask questions- You're in school to learn, so don't be afraid to do just that! Asking for help - from a teacher, a tutor or your friends - is a surefire way to make sure you truly understand the material. Get Organized- Making a plan for what you're going to do and when you're going to do it will make sure you're always ahead of the curve - literally.
If you have any suggestions let me know...