Any tips on Ethics?

For level 1, I studied ethics at the very end - just 1 month prior to the exam.

I want to start earlier this time.

Is it okay if I use my level 1 notes for level 2 (My notes were pretty straightforward and helped me quite a bit)? I mean for the parts that are common like the Code of Ethics and Standards of practice. Or are there major differences between the 2?(Haven’t been through the entire Ethics section yet)

Also, any tips on how to approach ethics for level 2 are more than welcome.