Read, read and read some more.
The shop manuals, old articles scattered around the web.
Figuring out how to search on the various forums on the web and finding the old threads with the golden nuggets of information.
Here on the 'Bolt there are the different forums for different areas of the truck. You have to be willing to explore this site to really get a feel for where everything is. A lot of the information is inside the forums, much of it is in html form.
You'll be learning stuff about your truck from now on, there is always something new to learn about.
Enjoy,
-W
