You may also consider or prefer his book, which is how I worked through most of his information.
And 3) never be without your BFT (black foamie thing), which is just a flag to put on the flash to prevent light spill. It will likely be the cheapest but most useful photo accessory you ever buy.
That said, in most cases I'm just looking to get a well lit and exposed photograph. Getting nice modeling on the subject tends to be secondary for what I usually shoot, which are family gatherings and work activities in meeting rooms and conference halls, so very much like the kinds of shots Scott shared in the post above.
The one suggestion I'd make for Scott's example photo is to aim the flash backward at 45 degrees instead of forward. That tends to minimize the shadows in people's eye sockets because the light is not coming from above their heads, but from further back and into their faces. When doing this, I've found I need to adjust the flash exposure compensation as much as 1 stop, even with E-TTL.
I will have to try pointing my flash a little backwards -- I'm not sure my Canon Speedlite will go back 45 degrees, but it can point somewhat backwards. I have been pointing it almost straight up when bouncing. Thanks for the suggestion. I believe I have my flash exposure compensation reduced by 1/3rd or 2/3rd's right now, so I will play with that when I experiment.