I have that book in storage, soon after septic is installed I plan to get my stuff here, need the tools to build.
We have been planning on a composting toilet in the house.
The septic will be used for the kitchen sink (it’s considered black water here) but everything else can be used for plants if we use safe soaps for the liquids and compost the solids long enough.
Take the course again, you already know some, so it should be easier to study more. Just don’t take it too many times, when I was in college there was a limit or 3-4 times you can take a course.