There are way too many ways to do this so I'm not going to write an in depth guidline on how to do it unless specifically asked. I'm willing, just don't see a need yet.
I can teach you how to build outdoor or indoor bogs, even mini desk or patio bogs. This is a huge topic and I feel overwhelmed to start until someone gives me a starting point. Otherwise I'll just be typing for the next week.
What do you guys want to learn first I guess?