I always read my notes aloud a good 3 or 4 times, and make sure I understand every little thing. Reading aloud allows you to hear the notes, rather than just see, and often implants it better into your mind.
1. Use your brain Take breaks between homework and make sure you drink water in between breaks because that's how your brain refreshens. Also, be sure to think critically and don't just write down random stuff which will help you get past your homework. It's important to think through every step of the way in assignments and tests.
2. Use online webpages to help you By this, I don't mean plagiarise because it violates one's academic integrity, but use the thesaurus to help you reword a phrase.
3. Read more Reading can help you with writing because it's great to have a few more exemplars to guide you as you strengthen your writing path.
Good luck! This question wasn't that specific so sorry I couldn't narrow it down for you on what you specifically want to work on.
