In chemistry you tend to find things make more sense in the 2nd year (it did for me and a lot of my friends at least) cause things tend to tie up more.
Tip 1) If you dont understand something after going over it twice, say something. For me, I sat in the lesson and didnt understand a lot of inorganic stuff and thought to myself I would go home and understand it then. I didn't, and if you do this for more than a few weeks things back up quickly. Ask a friend to clarify it.
Tip 2) Go over the basics again. It sucks, it really does but going over it makes life 100000x easier when you get an application question.
Tip 3) CALCULATIONS! I hated them but they were the only reason I didn't fail. If you can make a step by step plan to learn how to do each type of question, and can do it forwards backwards, with all the memorized formulae you are golden. There's a lot more maths than ever so this is a must.
Tip 4) Speaking of memorizing things, the basic tests for identifying types of compounds are long and seem pointless because you think that they're only worth one mark are actually worth WAY more in the long run. Example, this year there was 6 marks in basic tests that I didn't get because I didnt want to waste time. Learn them.
Tip 5) The stuff you learn at the end of the year is the hardest stuff, just because you're getting close to study leave doesnt mean you can put it off. Honestly i wish i looked at stuff more.
Tip 6) Rule of thumb: 'Anything that You Hate, Will be on the Exam'
Tip 7) Your controlled assessment book with all of your practicals in is what you want to go over for paper 3. More specifically, the theory and method of each practical.
These are things I wish I had known (as the first through the new system) and lemme tell you, its HARD. Props to you for taking it. Good luck!