Learning interfacing and basic electronics?

[jgarbers]

I'm a newcomer to robotics, with 30 years of experience in software and nearly nothing at all on the hardware / electronics side. I'd like to learn how to get stuff working with my Vex controller other than the Vex-branded parts -- things like speech synthesizers, infrared or other wireless communications technologies, and so on. Can anyone suggest a book, online course, kit, or other way to help me get up to speed on the necessary skills? I'm more than willing to start with whatever basic theory-type stuff is relevant. Thanks in advance for any suggestions you might have!