electronics math -- formulas and other math for DC and AC electronics.

  digital circuit reference -- logic gate descriptions, design methods, and Boolean simplifications.

 C programming language tutorial -- (download: 230 KB .zip), a great C tutorial in HTML format and includes many C examples. Gordon Dodrill - dodrill@swcp.com.

 On-line C programming language tutorial -- David Marshall 1994

 Printed Circuit Board Prototyping tutorial -- details the many processes involved with constructing a professional-quality PCB. 1994, 1995 Think & Tinker, Ltd.

More to come…