A couple of questions

Revit
4

  1. Clockwork package have a lot of nodes for those, and yes the properties can be changed in API unless they are read-only. If you provide an example (create a new topic with a descriptive title) a lot of people are ready to assist you.

  2. Animated GIF files

  3. The excecution order is from the top left and follows the wires of the nodes. Sometimes you can create a “passtrough” node to enforce the order of excecution. (To prevent one branch from calculating faster than the other). Search for the forum for examples.

  4. I dont know…

  5. Forum search? Try to make a list and do some operations to it, create a topic whenever you get stuck.