Maybe I'm mistaken here but reading your question I got the impression that you think you have to master process management before you are prepared to take on your project. I think you should just go for it, picking up knowledge as needed. If the project you're working on isn't trivial, you'll inevitably be hitting walls, usually where you didn't expect them to be, so you may as well just get going and roll with the punches.

Having said that, I found The Linux Documentation Project quite helpful. The howtos and guides there aren't exactly up to date, but they're still a valuable source of information and cover many topics.