Hey!

I'm completely new to amps(and forums). I'm 55 years old and decided to make some amps as a hobby... I'm not any where close to being an electronics person (but I'll learn it eventually). The main question is:   Is there a circuit, drawing, website, page, etc. that shows an original schematic AND the modifications available to that specific circuit on the same page? I'm also looking to see how difficult it would be to change an AC circuit to a battery powered one. PLEASE KEEP "TUBES" OUT OF THE CONVERSATION - Thanx for any info... CRITTER