Thread: If I want a book, I buy a book, if I want some Synth fun, I buy something fun to use with my synth.
Worth it... Super useful and fun when paired with a mic or other signals.
Book... Is not too bad... Kinda nice to have a hardcopy of something around the hobby that you can hand to friends when they ask "what's that thing blinking over there and where is that noise coming from?"