With lesson one the idea is to get familiar with some of the basic concepts and terminology as well as the solderless breadboard.

All matter is made of atoms. Atoms are made up of tiny particles we call electrons, protons and neutrons. Protons and, usually, neutrons form the center (nucleus) of the atom. Electrons spin around the nucleus.
All matter is made up of these few parts. It is only the number and arrangement of the particles that makes one type of matter different from another.



These particles can have an electrical charge. Protons have a positive electrical charge and electrons have a negative electrical charge. Positive and negative are attracted to one another while like charges repel one another.
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In this video I take look inside a breadboard:

 
This video from Adafruit goes in-depth:

Further Learning:
Linear Regulators on Wikipedia

Further learning:
Wikipedia: LED circuit

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Comment on the Troubled Circuits section here.

Futher learning:
MAKE presents: The LED
LED circuit tutorial
Notes on LEDs at Gizmology
The Electronics Club: LEDs
TheLEDlight.com: LED basics

Resources:
LED calculator

For this lesson we continue to get familiar with the basics of volts, amps, and ohms. We will look at a voltage divider, the difference between series and parallel, and Ohm’s law.

It is probably best to review some of the previous videos before continuing.