Windows is for
Desktop Utilities and
Asp.Net
is for
Website development.
First of all, you have to decide which domain you are interested in. I would say both are easy to learn.
Once you select the domain, you can start learning from
MSDN and
Code Project Articles.
You can find many basic and beginner tutorials on Code Project.
W3Schools - ASP.NET Tutorial[
^] is also a good resource to start on
Asp.Net
.