Mostly the easiest thing to do is look at past questions and mark schemes to see what they want you to write and practise writing. If you have any of the poems or stories then look at them and analyse them really thoroughly so that you know them inside out as it makes them a lot easier to write about/analyse.
I hired my own personal tutor and she has really helped me a lot ! But if you didn't want to spend any money then I suggest analysing poems and texts and answer test papers and just keep reading different genres ! Hope this helps ! ;)