Hi there, I completed my Unit 1 in January and did well on it - the most important thing I can recommend in terms of revision is a thorough, comprehensive knowledge of all your set texts.
To do this, I re-read them after first reading to spark discussions in class, and when I had re read them I split up an a3 sheet of paper into 3 sections: form, structure, and language and I made 6 points for each of the 4 texts I had studied for each of the categories, and found quotes to back this up.
I then did research into my own texts to compile some comprehensive notes about literary and social context of each of my texts!
To ensure you get the maximum marks, memorise the AO's for the particular band you are aiming for - I can't stress this enough! Whilst it's so tempting to go off on a tangent and write about another literary element it's crucial that your essay always has a very sharp focus to the task.
I also accessed AQA, and looked at every other exam paper, for the section A question it narrowed down the Chapter selection of the novel I intended to do for section A to just 2 chapters, so I revised those thoroughly. I also looked for examples of what they ask on the section B questions as well and had a go at a few of them.
Another thing I really recommend is reading examination reports! This is crucial to scoring high marks because it helps you to avoid errors any other candidates may make!
The conclude: a thorough knowledge of all your texts is CRUCIAL, learn the AOs for your target band and do some research into the examination!!
Best of luck!!!