Couldn't agree more. The only way to really get effective at using this stuff is to spend time with it, building up intuition about what it can and cannot do.

Playing with it is a great way to do that.

If there is something you are certain it won't be able to do, it's worth giving it a go anyway. Most of the time you will be right - and will still learn something new in confirming that and watching the way in which it fails. Very occasionally you'll be wrong and you will discover a new capability that surprises you.