>I am a beginner and want to program on the 85 in TI-BASIC. Is there an >instruction file somewhere that is simpler and more informative than the >instruction book? I just finished a book for the TI-86, which is an upgraded 85. Check out a couple of chapters and programs at http://www.ti.com/calc/docs/86prog.htm , even though there WILL be SOME stuff in the book you CAN'T do on an 85. I would guess that 90% of the content would apply to the 85. There probably are some very good books for the 85, but I can't speak for or against any (never seen them), although if you see Sally Fischbeck's name on one, it's pretty much going to be a safe bet. Dave Slomer AP Calculus and computer science teacher Winton Woods HS, Cinti, OH 45240