Here’s a 5 part video series that teaches some of basics in electronics –

The first lesson is a basic introduction to what we will cover, care for your lab, and explaining the basic chips and what they do. The first 2 lessons get your hands dirty making two simple circuits that make a light blink and a speaker sound like a buzzer using a 555 Texas Interments IC chip. Starting with Lesson 3 we will be going over basic things like switches and how they work. So don’t expect to understand anything until lesson 3. Later on I will work on figuring out how to use a rechargeable 9V lithium battery instead. I will also work on a list of parts you can buy to build your own kit if you can’t afford one from RadioShack or they stop selling them. Have Fun!

A complete course in electronics – Link.