There is no better way to learn about electronics than building your own gadgets or playing around with educational kits. Robot Blinky Badge is a simple kit that lets you build your own blinking wearable device. It has 5 different color LED sets powered by a CR2032 battery.
You are going to need a soldering iron, solder, safety glasses, and a few other items to get started. Costs under $15 at this time.