From the Community Wiki documentation: <a href="https://wiki.roll20.net/Building_Character_Sheets/" rel="nofollow">https://wiki.roll20.net/Building_Character_Sheets/</a> The first sections details how they are made, and what you need to get familiar with, and gives examples you could start from. The page's sidebar shows all the related documentation, when you start to look more deeply at individual aspects. Saying much more would just be repeating what that page already says, it's the starting point to everything.
