- How often do you make revision notes (eg: weekly/fornightly/monthly/half termly basis) or do you make them at the end of each day? Which of these do you find most effective and realistically possible to manage?
In sixth form, I started off trying to make notes every night (i.e. typing up my class notes from each day). I soon gave up doing this though as it was difficult trying to get the notes done as well as my homework. Therefore I'd recommend using the weekend to catch up on note-making, when you'll have more time to make sure you understand everything and supplement your class notes with textbooks etc.
- How do you balance your continuous revision throughout the 2 years with homework?
When I did A Levels, they were still split up into AS and A2 with exams at the end of both years, so things are a little different now. However, I'd recommend perhaps working until a certain time each evening, and then having the rest of the night to relax. Obviously this may not always be possible, but I can't stress enough the importance of having breaks from your work, as it's easy to wear yourself out and become demotivated.
- Free periods: do you use them for homework or revision?
I was fortunate in that my sixth form was close enough that I could walk home during my free periods. I generally used them as breaks rather than extra time to get work done, but it wouldn't hurt to spend them in the library for example to make a start on homework etc.
- How late do you think it's healthy to stay up working each night?
Everyone works best at different times, for example I found that I worked best in the evening and early part of the night, so I'd normally stay up until 11pm or so. However, it's still important to get a decent amount of sleep each night (7 hours perhaps?), so going to bed sometime before midnight would likely be best, depending on what time you'll get up in the morning.
I hope that helps, and good luck with your A Levels!