12:04 PM, Wednesday May 11th 2022
Dynamic Bible by Peter Han is a very practical book;
It handles spatial reasoning adequately without being too technical.
In fact, I believe part of the Drawabox curriculum is based on teachings from the author of that one.
Successful Drawing by Andrew Loomis is also (somewhat) simple to understand and apply.
On the other hand, Scott Robertson's How to Draw is often complicated to understand, especially if you don't have much experience in the field of spatial reasoning.