Go for it - straight with electric.

manXcat is spot on, the Fundamentals course work just fine for electric and then you can go straight to either the Blues or Rock courses (or both!).

I can certainly vouch for the Blackstar Debut 15E as well.  Excellent small, cool looking amp that's powerful enough for home, small venues and it's well suited to mike into a PA for larger. It'll take you from nothing to quite a lot before you'll need to look for something else at a very reasonable cost.

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