Step 1) Do a little research.
Google [
^]is a good start point
ie:
-
http://www.asp.net/mobile/device-simulators[
^]
-
http://developer.android.com/tools/index.html[
^] can "Develop on Virtual Devices" (Right side below the second image)
Step 2) Start coding
Step 3) Compile and use the debug to solve little issues
Step 4) When you get a problem you don't know how to solve
but at least you tried it, then come back and ask for something concrete with a snippet of the code giving problems
Sorry if this is not the answer you were looking for. But your question is a bit too wide to be answered at the "Quick" Answers. It is better and you get faster help if you make 10 concrete questions about concrete problems, than a big question about a "how-to guide"