Hi Pavithra,
Tutorial
http://wcftutorial.net/
http://www.wcf-training-guide.com/
http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/362aaaf6-8eda-4fff-8e4c-8198e3f327fe
Example
http://www.codeproject.com/KB/architecture/wcfbyexample_introduction.aspx
http://weblogs.asp.net/ralfw/archive/2007/04/14/a-truely-simple-example-to-get-started-with-wcf.aspx
Code Samples
http://msdn.microsoft.com/en-us/netframework/wcf-code-samples.aspx
Best Regards :)