"Hands-on Start to Mathematica" is a free,
two-part online screencast that introduces key features of
Mathematica. If you haven't already, be sure to check out
Part 1 here:

http://url.wolfram.com/6enlgs/

"M10: A Student's First Course in
Mathematica," a video-based training course that allows
students to access more in-depth Mathematica training at
their own time and pace. Students can work alongside the
videos with the included exercises to practice the skills
they've learned. For more information and to order this
course, visit:

http://url.wolfram.com/6GGLUc/