Yeah, GiGs' guides are great. On the Tutorials page, there are some sheet development videos linked: <a href="https://wiki.roll20.net/Character_Sheet_Development/Tutorials#Other" rel="nofollow">https://wiki.roll20.net/Character_Sheet_Development/Tutorials#Other</a> good video out there on how to create a sheet from nothing I'd say you'd probably learn more by starting off from an existing (simpler) sheet than starting from nothing, it should give you a feel on how core features and components of sheets, and give you an idea on a complete, functional sheet code. Checking out something from these could be useful: <a href="https://wiki.roll20.net/Character_Sheet_Development/Complete_Examples" rel="nofollow">https://wiki.roll20.net/Character_Sheet_Development/Complete_Examples</a> Picking an existing sheet( that resembles your end goal at least a bit) as a starting point likely would get the ball rolling for you better, by modifying existing code and learning from that.