Graphing Calculator Resources
TI-83 web based tutorial. Very helpful and user friendly, from Prentice Hall.
More Detailed Graphing Calculator guides in PDF format for various TI graphing calculator models (including TI-85/86) - written specifically for math students. From Houghton-Mifflin.
Guidebooks for TI-calculators - did you lose your user's manual? never had one in the first place? Check out the online users' guides from the Texas Instruments web site for:
An exhaustive index of keystrokes to various calculator models from Prentice Hall. You search under a particular topic and it will give you the related keystrokes.