Exploring Pedal Building

Hey!
I was directed here from instagram.
My question was regarding courses or areas to explore as you’ve come into building these pedals. I have a good foundation of electronics from a tinkering perspective and have worked with arduino and teensy. I built a cool percussion instrument with teensy that triggers solenoids via midi. On the Kinotone instagram there was a computer that seemed to be testing the circuit board of the Ribbons pedals…I was wondering where to begin looking into audio type electronic development (forgive my lack of proper terms)
Thanks! Stoked to get my ribbons soon :ribbon: