​These resources are free to use! No need to buy books, manuals of videos elsewhere. We have provided different resources which may cover the same topics but with different approaches, so choose the one you are more comfortable with or use them all! Study and prepare for certification as a  Certified Locksmith and Security Specialist (CLASS).  Got CLASS? Get some with the Society of Professional Locksmiths!

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Navy Electricity & Electronics - Intro to Matter, Energy & Direct Current

Chapter 1: Matter, Energy and Electricity
Chapter 2: Batteries
Chapter 3: Direct Current

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​Lessons in Electric Current - DC Current

Chapter 1: BASIC CONCEPTS OF ELECTRICITY
Chapter 2: OHM’s LAW
Chapter 3: ELECTRICAL SAFETY
Chapter 4: SCIENTIFIC NOTATION AND METRIC PREFIXES
Chapter 5: SERIES AND PARALLEL CIRCUITS
Chapter 6: DIVIDER CIRCUITS AND KIRCHHOFF’S LAWS
Chapter 7: SERIES-PARALLEL COMBINATION CIRCUITS
Chapter 8: DC METERING CIRCUITS
Chapter 9: ELECTRICAL INSTRUMENTATION SIGNALS
Chapter 10: DC NETWORK ANALYSIS
Chapter 11: BATTERIES AND POWER SYSTEMS
Chapter 12: PHYSICS OF CONDUCTORS AND INSULATORS
Chapter 13: CAPACITORS
Chapter 14: MAGNETISM AND ELECTROMAGNETISM
Chapter 15: INDUCTORS
Chapter 16: RC AND L/R TIME CONSTANTS​

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​Lessons in Electric Circuits - Reference

Chapter 1: EQUATIONS & CONVERSION FACTORS
Chapter 2: COLOR CODES
Chapter 4: ALGEBRA REFERENCE
Chapter 5: TRIGONOMETRY REFERENCE
Chapter 6: CALCULUS REFERENCE
Chapter 7: SPICE CIRCUIT SIMULATION PROGRAM
Chapter 8: TROUBLESHOOTING -- THEORY & PRACTICE
Chapter 9: CIRCUIT SCHEMATIC SYMBOLS
Chapter 10: PERIODIC TABLE OF THE ELEMENTS

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​Lessons In Electric Circuits - Experiments

Chapter 1: INTRODUCTION
Chapter 2: BASIC CONCEPTS AND TEST EQUIPMENT
Chapter 3: DC CIRCUITS
Chapter 4: AC CIRCUITS
Chapter 5: DISCRETE SEMICONDUCTOR CIRCUITS
Chapter 7: DIGITAL INTEGRATED CIRCUITS
Chapter 8: TIMER CIRCUITS

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Additional Resources

Click on the Yellow resource links listed below to enjoy a fun and easy way to learn electricity/electronics.

Interactive Simulators

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Video Lectures & Lab

Video instructions are provided by Tim Fiegenbaum of North Seattle Community College. Based on the book Electronics for Computer Technology by David Terrell. © 2003 Delmar Learning, a part of Cengage Learning, Inc. All rights reserved. Reproduced by permission.

Electronic Systems
Representative Systems
System Notations
Physical System Hierarchy
System Connectivity
System Level Troubleshooting 
Circuit Simulation

Basic Electronics and Units of Measure
Electrical Quantities
Light and Other Waves
Magnetism and Electromagnetism

Basic Components and Technical Notation
Technical Notation
Wire and Cable
Electronic Components Resistors
Electronic Components

Circuits
Basic Requirements for Current
Series Circuits Part 1
Series Circuits Part 2  
Series Circuits Part 3 
Voltage Sources
Parallel Circuits
Series Parallel Circuits
Complex Circuits
Ground and Other Reference Points

Circuit Troubleshooting
Troubleshooting Series Circuits 
Troubleshooting Parallel Circuits 
Troubleshooting Series-Parallel Circuits 
Troubleshooting Strategies

Transformers

Electronic Lab
Electronic Access Control
CCTV / Video Surveillance 
Cable Management