Bill, ditto all of the above - I've got few more years on me than you and started boarding from scratch a year or so ago and love every minute I get out on the water.
If you can, take a couple of lessons with a pro before you start riding behind your own boat, it will make eveything so much easier.
The Book is a great series of instructional DVDs but you don't need the whole thing at the start. Disks one and two will take you a long way. You can check it out here
http://www.thebookdvd.com/ There are some other DVDs which helped us when we were starting out, we liked Waketrix and especially Destruction Manual.
Finally, there are a couple of excellent short videos about the basics on the CWB site here
http://www.cwbwakeboards.com/2007/videos.php - scroll down to Board Set up and Basic Start. The last one is gold.