I have been searching for sample twitter & facebook oauth code to start with, but can't seem to find any. can anybody share some ideas
There are several .NET libraries that do the hard work of connecting to Twitter for you.
My first recommendation is Twitterizer: http://www.twitterizer.net. The developer of the library is very personable and his library is excellent.
My second recommendation is TwitterVB, a library that I created. It's at http://TwitterVB.codeplex.com.
Both libraries are open-source.