Hi John,
I am in a similar situation with you- I started from the very beginning-- yeah there are lessons I fast forwarded through, but there were things I learned in Fundamentals 1 and now 2 that are key building blocks that lead to the more advanced theory I am looking forward to learning.
Just get started and see how it goes!
Rick
2021 PRS Custom 24 Floyd Rose
1992 Ibanez RG470
Helix Processor
Boss Katana 100 MK II