Please be sure to read as many build threads as you can. That's where the real info and experience is.
Also look around the site, and read as much as you can before posting new threads. Everything you need is here if you look around.
After you narrow down your questions, we will be happy to help you out in detail.
Living off grid in a small space is a ton of work to get started. If you don't like working morning till night, being broke for the duration of the build, rejected by most, this may not be for you.
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization