if you have former programming or scripting experience (loops, variables, building functions,...) learning by exploring other scripts and just doing should be just fine. If you lack any of that knowledge or experience then there are some videos that can help you to get started but like always they aim usually for total…
not all of them :) but true most of them do. Actually some of the UVmapping specific stuff is stored 0,1,2.. and not 1,2,3... but then again that has some ancient reasons back from the max 2.5 days or so. Also loops and conditions are a bit different as in other scripting languages but I got fond of the bitArray loops…