These days I have been working on improving my stroke using Total Immersion. While I have read the book before; this time I am taking an actual workshop to help polish all the various details.
One of the keys is to think about reducing the number of strokes it takes to complete a length. I personally think that it is a controversial topic as a number of other people suggest that really look at the swim golf score and overall efficiency. Here is a link by Terry (The guy who is the TI Guru and Founder) detailing the SPL suggestions per length.
I will write up my experience with Total Immersion Drills as I go along as a way of reinforcing it in my head as well as sharing my experience.