There is no guide as every system is different, there are only different approaches and methods.
Getting started is daunting, but you will get tuned in with whats happening, and pretty soon it will all click.
Some things to start looking at are; chemistry, livestock interaction and selection, filtration, lighting, bacterial decomposition/ nitrogen chain.
It is important to know most if not all of these aspects effect each other in varying ways.
I used to have a blog for beginners, I will have to see if its still up.......