Keyboard Maestro lets you set up sequences of actions, or macros, and then does them for you. Watch your computer do the work, instead of the other way round. Let me show you how it works.
Search here or browse MacTips by topic.
Tips about Applescript
Make your Mac do the work for you. Applescripts set up actions, sometimes long and complex ones, that your Mac can do while you just sit back and relax. These Tips explain Applescript and provide practical scripts anyone can use.
Take Control ebooks (affiliate link) are superb.
I do some of my best learning from them. Buy through my link so I can make more and better Tips.
Add iTunes Comments
How to add a comment for an iTunes track.