HEATKEYS

Microsoft Excel Consulting, Online Classes, video tutorials, free macros, and walkthroughs for beginners and advanced levels. Also includes helpful tips, tricks, code, and a forum.

DATAQ Instruments is a leading supplier of data acquisition hardware and software systems for PCs. Starter kits as low as $25.

Free source of SPICE circuit files and tutorials for the hands-on learning of electronics through the SPICE simulator. Also inlcudes SPICE basics and a command summary. Links to free demo versions.

LeCroy is a leading provider of oscilloscopes, protocol analyzers and related test and measurement solutions that enable companies across a wide range of industries to design and test electronic devices of all types.