[ecto]

Buy an Arduino and hack on it! It will open a lot of mental doors for you.

If you're not down with electrical engineering, just start a web project. I've found the easiest way to learn is to do.

[srverma]

I've actually used an arduino before in a robotics class, was loads of fun and something I enjoyed!

Although, I'm sort of looking into building some web / mobile apps now.