hey there buffalobass! merry christmas and happy new year to you, also!
musicdojo is a great place to start if you are wanting to step into the harmony and theory stuff... however, if you are going to do a class there i might recommend jazz improvisation level 1... it is more of an applied harmony and theory for the bass specifically, as opposed to being a more general course. if you wanted to do private lessons, i'd be happy to find a place for you online, as well. no preparation would be needed, as i would basically evaluate where you are currently and custom tailor a path for you. if that is something you'd like to chat more about, shoot me a PM or email me at
lessons@adamnitti.com.
thanks for your interest!
adam