I'm just wondering what people use to revise for the following and any advice they have or good notes they've found.
Flash cards are useful for some of the biological processes and cycles.
If you don't have a textbook already, I would recommend this textbook for A2. I am using it at the moment and it's excellent.
S-cool has brilliant biology notes.
In general, youtube is your friend for videos and people have even compiled playlists for the sylabi but I'm a big fan of the Khan Academy channel for topic revision. It's American but biology is biology .
And lastly, here are links for Bio1, Bio2, Bio4 and Bio5 packs.
I hope you find the above useful .