knockoffham wrote: "I’m going for the low voltage license because even if I don’t need it (I think I do though) I’d at least like to be properly certified..."
Being certified s a great idea. You should extend that concept to obtaining certifications for your chosen field.
Go to:
Accredited Communications Certifications
Look at the following certifications:
Mobile Communications and Electronics Installer (MCEI)
General Communications Technician - Level 1 (GCT1)
General Communications Technician - Level 2 (GCT2)
Line and Antenna Sweep (LAS)
Practical Antenna Basics (PAB)
Each has a link to a document that lists the required 'competencies'. Measure your current knowledge against these lists. Then, create a course of study to follow to prepare for the testing and to be proficient enough to be in the business.
I guarantee that a couple youtube videos won't get you there any more than a couple videos will get you an engineering degree.