I apologize as I know this is a mostly German section.
What is XNA
XNA is a game development framework designed by Microsoft for use with .Net programming languages (usually C# but there is some VB support now). Using XNA we can create high quality games of all types and the framework can often be allowed to handle most of the nitty gritty details such as managing input devices, content management and interfacing with our graphics device.
What Qualifies me to Teach?
Short answer: Nothing
Long Answer: I've been a very active member and moderator of the Conquer Online section on EPvP. In my time here I've released countless guides, sources and tutorials focusing on C#. In that time (as well as my education in school) I feel that I've learned quite a bit. Game development is something that is very interesting to me and as such I've been working on learning the XNA framework for the last while and come up with some rather enjoyable projects. I feel I'm now to the point where my insight might be of some use to others and I've decided to do what I can to help.
What do these guides cover?
I just created the blog tonight but in that time I've completed my introduction to XNA course. This course only covers the XNA framework and is not designed to teach you C# or basic programming logic. That being said, little to no programming knowledge is required and at most you would need to read an extra page or two on google to keep up.
Currently the tutorials cover
-Installing XNA/Visual Studio
-Creating a Project
-Differences between XNA what you may have used before (Polling vs Event Driven Programming, Game loop, etc)
-Handling Keyboard Input
-Loading Content (textures, fonts) using the ContentManager
-Drawing sprites
-Drawing text
-Interactive Objects
-Basic logic
-Introduction to GameComponents to modularize your projects.
Tutorial Links
I've created a simple blog to host these courses on.