I tell people to call Mike Holt Inc, tell them what you're trying to do, and then do
and buy whatever they recommend. Even if you've got to borrow the money from someone. I did this and they were extremely helpful. While I did buy all the awesome books and videos, I didn't go to Orlando and take the contractor's license test prep class like they suggested. Had to study for the exams all over again, but this time I took the class and passed it with no problem. What a dope!
Once you're done studying for your Journeyman I'd suggest his grounding and bonding course with videos. As others have said, it's very good. I take my CEU with them, and one year he did an abbreviated version of the Grounding vs Bonding course. I learned more about grounding in 8 hours than I'd learned in 30 years... It'll really take you to a higher level of understanding.
Then, if you really want to be a better technician, I'd suggest a book called "Electronics for Electricians 7th Edition"
https://www.amazon.com/Electronics-Electricians-Stephen-L-Herman/dp/1305505999. You'll need an inexpensive oscilloscope that can probably be purchased off of eBay, and about $150 worth of components you can purchase off the internet. It's got a complete material list and takes you step-by-step through explaining all the components and building and troubleshooting the circuits. You won't be an electrical engineer, but you'll have a basic understanding of what's going on in the equipment we service and install. This will be particularly useful with all the power electronics coming down the road and you'll really stand out against the other electricians.
God bless...
