I would recommend trying out SolveSpace first, which is what CAD Sketcher is based on. It has a delightfully simple UI, and the basic sketching workflow is the

I would recommend trying out SolveSpace first, which is what CAD Sketcher is based on. It has a delightfully simple UI, and the basic sketching workflow is the same, so you can learn the concepts first in SolveSpace, then get familiar moving around in Blender and transfer your SolveSpace knowledge over.