@Jeff – don't know if there is a specific scripting guide for InDesign CC.
So What's New in InDesign CC Scripting DOM
Another valuable reference (not covering CC but also InDesign CS6) is:
For learning ExtendScript you will find useful:
and experiment with your own InDesign files and code snippets from that base on…
3. Find a collegue or some friends who also want to learn about it and do some learning sessions together
4. Visit this forum a lot and browse through older threads. Most threads are about ExtendScript.
Where did you hear that Adobe wants to phase out AppleScript on its products?
Maybe you read about the abbreviation "AS" in this regard; which for some people is "AppleScript" and for some people it is "ActionScript". Don't confuse the two scripting languages.
Thanks for your input.