Want to know the quickest and most effective way to getting used to your manual lens?
I'll tell you anyway: find a subject that is constantly on the move, focus, take single shots (not bursts), and do like 10 in a row before reviewing the shots...
...what I'm basically saying is - consider going to a dog park. Practice quick-focusing while the subjects are moving. No treats! That's cheating.
Was on my way home and passed by the neighborhood's dog park. I did 5x10 really quick shots, and got ONE decent photo! Not sure how I'm supposed to feel about that.