Newbie, OS 10.01.5 How to start

I tried SU years ago and never finished with it. I am retired now and would like to learn. However it looks like the PRO version is the only thing out there, and it is way expensive for me. I just want to do some 3D for some wood working projects, and some house designs I want to do. I have worked in the electronics industry for 40 years. Have used turbo cad for years. I do not want to use their 3D since the MAC
version is not good,( my opinion).

What do you suggest for software that is no too expensive?

SketchUp Make is free for home and hobby use. You can download it here.