Go with what you know - at first

To start off Lieb-Tech modules will be focused on Microsoft Gadgeteer & .NETMF. Why?

1. Comfort - been a MS .NET developer since version 1.0 days.
2. Ecosystem 
1. Visual Studio is a great IDE on it's own. 
2. Setting breakpoints and getting real-time insight into values without debug.print() makes me happy.
3. GHI - they've been great supporters for these platforms.
4. Platforms - I love the Gadgeteer way of quickly building devices and want to (hopefully) help others to do the same.

They may not be the sexy or current platforms, but all together these make for a great system to work with.

But I do plan on expanding to supporting more.

1. Arduino - very flexible and I view it as a distant cousin to .NET MF/Gadgeteer
1. Not done much professionally with C/C++, so that will be a part of the learning curve
2. RaspPi - can't beat the price for what you get - great processing power and connectivity 
1. Not thrilled with having to deal with Linux and Python/Ruby/etc.
2. Not thrilled with having to with hardware through an OS layer
3. BeagleBone (see RaspPi)

These present challenges for me, but also opportunities to learn and broaden the scope of my abilities. I always felt that being at least familiar with similar technologies helps to be better at what you are working on at the moment.