Electronic Specialties 186 12" x 12" x 1" Hands On-Line Electrical Training Card 16 training cards in all, all accompanying videos can be viewed on YouTube or at esitest.com Here are the card titles: Basic Circuit Construction, Measuring Resistance in Series, Measuring Resistance in Parallel, Measuring Voltage Measuring Amperage, Rheostats & Potentiometers, Series Circuits, Parallel Circuits Relays, Electromagnetic Switches, Diodes, General Theory, Diodes, Electrical Check Valves, LED's-Light Emitting Diodes Starting System, Brakes & Turn Signals, HVAC, Blower Fan & A/C Clutch, Reversing Relays, Window Motors, etc.