My advice for both Electronics and Programming is to flip it around: find something you'd really like to build and then figure out the tools, skills and a version you can make. Example: My 5-yr-old wanted to build a pinball machine, so we started with using a micro controller to light up an LED and make a noise when a the ball contacted a target. It was a pretty easy intro to the programming, electronics, debouncing a switch (and woodworking!) My 10-yr old wanted to make a computer game about ancient Egypt and twine was a great way for her to get introduced to programming.