Check out Hands On Auto Training
If some one would have explained it like this to me 25 years ago I would not have struggled when I started out!

https://courses.handsonautotraining.com/
Equipment that I use:
TopDon Battery Maintainer https://amzn.to/40mubUw
Cardaq Plus 3 https://amzn.to/3Z9F3V1
Astro Meter https://amzn.to/402cIkJ

Quality Test Leads https://www.aeswave.com/Automotive-Te...

https://amzn.to/3LH5Vsc Pico 2205

Camera equipment that I use in the field
https://amzn.to/40jzpR2 - Sony ZV-1 Camera
https://amzn.to/40hchCA - Tascam Audio Recorder

Studio Camera https://amzn.to/3Jz7A0p