I wrote out a reply to this, pressed submit, and TSR ate it.
Second time lucky?
Firstly, I have some tips
here which may help, but they're mainly generic revision tips.
When it comes to self-teaching I think the most important advice I can give you is to
work on good time management. Not sure if you have a job or not, being a little older than the usual A-Level student, but 100% would recommend that you set aside a set number of hours per week per subject dedicated to revising, and stick to them. It takes discipline, but when you don't have classes scheduled in it's easy to push revision aside in order to do non-academic stuff, and before you know it exams are upon us!
One thing I would say when it comes to making any timetable/schedule/etc is that it certainly helps me (results for you will depend on how you work!) to
assign revision by task, rather than time-slot. By that I mean, setting tasks to do in a day, and working on them until they're done before moving onto the next thing, rather than delegating an hour to this, an hour to that. If you find you drag things out and procrastinate when studying then this may not work for you, but certainly I think it's useful doing it this way because a) if there's something I really struggle with an I'm just coming to grasps with it, I can work on it for a little longer and not screw up my plan, and b) I don't spend as much time clock-watching, or rushing my work. It helps to build your timetable around a set goal for your revision each day: i.e. what you want to get out of this study session, a past paper you wish to finish, resources you want to create etc.
That being said,
you must remember to take breaks. Again, without class orientating your day, it's easy to just power on through without stopping for a rest (something I'm super guilty of). Each time you finish a task, take the time to make yourself a drink, have a snack, go for a walk, watch something on YouTube - whatever. Just reward yourself for the hard work and get yourself ready for the next chunk. It's better to take lots of little breaks and do one thing really well, than try to cram multiple tasks in to one day and end up doing them half-arsed and burning yourself out at the end of it.
Don't just limit yourself to exam board resources (so past papers, examiners' reports, textbooks etc); read around the subject in more depth. The number one thing I find I miss through self-teaching is the commentary that comes from being in a class; there was always someone who would ask a question about something, and we'd end up side-tracking a little to discuss that particular element in more detail, and overall it benefited us all and gave us a rounder view of the subject as a whole. Being at home on your own, you don't have that. So definitely
read science articles, listen to podcasts, watch videos and whatnot on the subject you're studying to supplement your knowledge. Ask questions about the content and look up the answer for yourself. Read TSR threads from other students studying the subject at uni level (or look up questions from people doing A Level). Try to get yourself as interested in the subject matter as possible and pad out your revision sessions with social and media input.
Linking to that, try to
relate your learning back to your everyday life. If you can,
find a partner to study with - either face to face, or online. Just someone to chat to about the topic, work on your weak spots with, etc (I'm always happy to talk Bio!
). Find links to the subject in your normal life. If you can, try doing some of the science experiments at home; a lot of the biology practicals, especially plant-orientated ones, can be easily done at home, and sometimes seeing and doing a practical helps solidify the theory in your head.
The other thing I would say is that if you have the money set aside for it and feel it's something you need, there's no shame in getting a tutor, even if for a few sessions. £50 spent on someone explaining a concept to you in a different light can really make a difference - but I'd say
if you're going to get tuition, do it sooner rather than later. Last minute tuition isn't going to be done early enough to give you a good learning foundation, and many tutors become very busy around exam time. You can also flip this on its head, and try tutoring someone
else - if you can teach someone the correct information well enough for them to retain it, then you definitely know the content well yourself.
Lastly, my biggest advice for this sort of thing is to
track your progress. Set goals, tick them off, reflect on your work. Look at where you've improved, and areas that still have a way to go. Candidates in classes have the advantage that their teachers will normally be checking in on them and setting mocks, end of unit tests etc. We don't have that option, so do it yourself. It'll help keep you on track.
Aaaand I think that's about it! Obviously everyone works differently - I find these things work for me, but they may not all be useful to you. But, it's always worth trying new methods and new ideas, because if nothing else you've switched things up for your brain: at best, you may have found a better way of working! I can't tell you how to get an A grade in maths and biology because different things will work for different people, but I think if you stick to a schedule and revise in a way you find helpful, you should be able to achieve what you want.
If you ever have any questions or get stuck on something in Bio I'm always glad to chat, so feel free to shoot me a PM.
I'll try to answer ASAP! Other than that, good luck!!
What exam board(s) are you on, by the way?