Hi,
I did edexcel EPQ. I really enjoyed it. I have a fairly good knowledge of it. Depends what you want to know. I did a dissertation, which was made up of an abstract, introduction, discussion, evaluation, conclusion and appendix
It took me quite a while to do, but if you really stick with it for a few hours each day it's fairly quick to complete.
I did it on a science based subject, and usually if you're going for a science based subject, a dissertation is easier (i.e no primary research). Otherwise you can do an investigation with questionnaires, interviews and stuff. But rarely will you get a science topic where they would be relevant, unless you do a controversial topic and ask for opinions or something.
Start by brainstorming the subject you want to do, what interests you. Try to find topics that aren't too specific (you'll have no research) or that are too broad. I made the mistake of going with a subject that was far too broad, and it meant that I didn't get much time to dedicate to each individual part of the topic. That made the workload so much bigger, because I had to try to condense way to much information into my dissertation. Long story short - if it seems like there is really varied research, try to form a project that is a little more specific. It'll really help you
As you brainstorm research the topics. You'll need at least 20 sources, from books, journals, websites, documentaries. The bigger the variety of sources the better. I used multiple documentaries, science journals as well as plenty of websites. I did nearly 40 sources I think, due to the size of my project.
Something to keep in mind is - make sure you're actually interested in the topic. Otherwise you really won't want to do it. I absolutely loved the topic I did. It was something I already knew a lot about, and I wanted to find out more. It really helped that I knew a lot about the topic, because when it came to my presentation at the end of the year, I could answer people's questions. I had about 20 questions asked after my presentation, and I could answer them all at ease cause I knew so much about it. And I was passionate about it
Ok I've rambled on quite a bit. PM me or ask here if you want more info. I'll be happy to help