This site is chock-full of great, affordable tutorials teaching all kinds of jewelry techniques, from beginner to very advanced. Every tutorial I've bought there has been well-written. (Some of the simpler ones are even free!) And even if you don't buy anything, you can still enjoy the beautiful eye candy!
JewelryLessons.com is a website by accomplished jewelry making teacher Eni Oken that provides a place to buy tutorials from many artists in a wide variety of styles. The site also offers informational articles on the business of jewelry making, as well as an online community where members can discuss the craft.
Jewelry lessons is a great site. There are simple free tutorials for those just starting and and tons of tutorials from the beginner to the most advance jewelry artist. The main focus is wire work but there is also lots bead work tutorials. Jewelry lessons is a huge gathering of the top jewelry artists from around the world all gathered in one place. And there is also forums so you can ask questions about any aspect of jewelry making and selling jewelry. And don't forget the eye candy of all the finished pieces and all the students that show you how their tutorials turned out. Each tutorial gets a rating and people can comment on thier thoughts and ask the artist questions about the tutorial. And you can store all your tutorials on site or copy them. All the tutorials come with detailed pictures. Another handy thing is the tutorial lists all the tools needed and supplies before you buy the tutorial so you can make sure you have the needed tools before you buy. I always direct my students there when they take classes from me.