Essay Plans for History A level?

I am going to be making Essay plans for A level history OCR Early Modern. I wanted to do Essay Plans on every question possible so i can be so prepared for the exam. How should I go about this. Should I look at all the questions that have come up in the previous years and then write down every question i think could be asked. Is there a place were there is every question possible has already been written up in a list. Any help would be apperciated