I've used it a very little, but found it fairly easy to do what I needed to do (nothing very complicated) once I just started trying to do things instead of wading through the longwinded tutorial for the version we had at the time (early 90's).
If you can find someone who uses it regularly to ask questions of when you get 'stuck' that can be ever so much better than a book.
Just jump in and start trying to do things and it will start coming together for you.