General resources:

http://www.intatters.com/ 

http://www.ravelry.com/groups/tatta-tatt-tatters  You have to join ravelry to see anything, but joining is free.

http://www.ravelry.com/groups/tatta-tatt-tatters/pages   lists of resources--books, videos, etc.

http://www.flickr.com/photos/25441481@N07/ 

http://www.youtube.com/user/lacenews#p/c/CE9D45AB796DFD40    She has more than 4 playlists of videos on tatting.

Patty Dowden recommends these.  She says to start with #1 and work through them consecutively.  http://www.youtube.com/user/kcabrera74?blend=1&ob=video-mustangbase    K Cabrera has over 90 tatting videos.  

Robin D likes this one.  http://entrelanzaderas.blogspot.com/2010/10/clases-de-frivolite-tatting-lessons.html 

These are some Lorelei found, for absolute beginners:

http://www.youtube.com/watch?v=ljXBGDVwEIU&NR=1 Shows her working very slow with thick cord.  You can see her flipping the knot.

http://www.youtube.com/watch/?v=BKYQ3EHJ1NU    This one goes reeaalllyy sslloow, flipping the knot.

Flipping the knot, very slow: http://www.tattedtreasures.com/2011/08/the-dreaded-double-stitch/ 

The absolute beginner series: http://www.youtube.com/playlist?list=PL1F0C9E52018DDB0B

Hiding ends:  http://www.tattedtreasures.com/2011/11/sewing-in-ends-method-1/

A method of adding a bead:  http://www.youtube.com/watch?v=EdAiMBmhPXk

http://www.tattedtreasures.com/tutorials/ 

http://www.tattedtreasures.com/2011/08/absolute-beginner-series/ 

Others:

http://www.youtube.com/watch?v=g_JGTCju4G8&NR=1

http://www.youtube.com/watch?v=lrmGqkInEXs&feature=related

http://www.youtube.com/watch?v=G3swnjGMC9Y&feature=fvwrel

http://www.youtube.com/watch?v=Ef-Ur-u6cUo&feature=related

http://www.youtube.com/watch?v=T4orFe4kaLw&feature=related 

Needle tatting, for those having trouble flipping the knot:

http://www.youtube.com/watch?v=9uXq0gSkUOA&feature=related 

This is supposed to be the best on needle tatting, for absolute beginners:  http://www.instructables.com/id/Learn-Needle-Tatting-With-My-Flower-Pendant-1/ 

http://www.youtube.com/watch?v=73luorqg8v4 This video shows rings, picots, bars, closing rings, attaching to existing rings.

Please post good websites in a comment box below.