It is quite complicated, but when you learned and practice it at the same time. You'll get used to it. I haven't tried making compost extract because most of the time, I just add the compost to the soil and then transfer my plants. Thank you for the Stages of Succession docs file @dynamicgreentk.
You are welcome! I hope that file comes in handy!
It will be handy soon. I am afraid for the tools and things needed cannot be found in my area.