2> How can i debug a webservice target,
I know of a couple of ways to do this. Launch wcftestclient.exe (C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE) and use it. It's great for quick and dirty but the drawback is the default buffers. They are the default 32k so if you're returning a large result set it will complain. You could also write a simple wpf app in PB.Net to call it. Doing that allows you to set the buffers to any size you want. Make sure you are running your service locally (http://localhost:some port number/Services/myservice.svc). Set a breakpoint in your service and you should be able to step to it.
hth,
Mark