Hi @Andrew Gillings, welcome to BP! Research is always a great way to start, but don't get stuck in the analysis paralysis zone! Most new investors make many mistakes along the way. It's part of being new and should be looked at as a learning experience. Have you considered house hacking? Buying a multifamily home, living in one unit and renting out the others is an awesome way to get started and helps you learn how to be a landlord too!
As for finding a mentor... network with people on the site, or even better go to a local REIA and meet the big players in the markets you are interested in. Introduce yourself and find out how you can be of value to THEM. You mentioned that you have a flexible schedule and the ability to work for free. Those are major advantages for you.
Listen to the BP podcasts as much as possible. They are so motivating and you will learn so much from them.
Lastly, adding a profile pic will make a big difference in adding credibility.
Good luck!