I haven't used any course yet—the ones I've noted for consideration are:
Memrise. I haven't done their VBA course, but I found one of their language courses not too bad.
AnalystCave I've marked that 'superb' for what it's worth.
MakeUseOf
Greg Maxey
A search throws up some possibles:
Udemy $10 until August 29th—they're one of the big online teaching companies.
Microsoft free 'basic' intro.
PS you might get more answers if you post in the Word or Excel VBA forums here.