1) Cortex help
2) When you visit an object's Reflex menu | define packets there is an option to generate defaults which auto generates some packets for popular actions. Where these don't fit the requirement the command insight editor may have the necessary detail. In some cases (dimmer probably being one) you may jsut have to ask us for specifics and we can probably help and post on forum if considered useful for others. In Cortex 24 we have introduced a tool which autogenerates some basic Reflex functions mainly for lighting control based on the connectivity in the higher level Cortex automation - in a sense trying to relieve people of getting involved at the nitty gritty level. But its only a start.
3) There aren't as yet, but we're happy to try and answer questions as best we can for individuals.