Question
I would like to to have instructions on how to prune a avocado roots and top so it does not grow.

Answer
Bonsai.
The avocado is a tree. It is meant to grow. So study the skills of Bonsai.
This is all about making a tree stay the size you want it, and not the size it wants to be.
It takes time and patience, because you will need to cut it often, and carefully.