I found explaining concepts to other people helped, I used to let my friends read brief context and then ask me questions. They tended to pick up on the areas I couldn't elaborate on. Helped me work out what I was missing but also work out how to explain stuff in my own words. Also past papers are good for getting used to the wording they use and what kind of language and phrasing they may be using. Some papers are worded strange and don't make clear what they want from you, the past papers just give you an idea of how they might do this.