I recommend the Happy Traum tapes available through homespun videos. Do a web search for homespun and you will get their website. Happy, to me, is a bit more personable than Stefan Grossman, although Stefan's tapes are good.

Happy's first blues tape is pretty basic. If you have been playing fingerstyle guitar for a while, you may be able to start at the intermediate level.

All of the above advice works, except for Rick. Canadians never get the blues because the country is so pretty.

Roger in Baltimore