I've been a programmer since 1984, and have been doing .NET development in C# since 2002. I know very little about electronics, and I'm new to physical computing, but I find it fascinating! I have a Netduino Plus 1, and a Netduino 2, and a toolbox full of all kinds of components, from resistors to Series 1 XBees.
I've read through the forums here, and written a simple web client for my Netduino Plus 1, that parses an XML it downloads from a webserver (on my PC), and turns on/off the LED based on the XML data.
I've found the NEDX tutorials on oomlout.com, and plan to go through each one, hoping to learn more. I'm always looking for more references!