I just started using Selenium 2 for some site testing. I used Selenium IDE for Selenium 1, but things are a bit different without that crutch. I am trying to use XPath selectors since I am using Webforms, and I am not real familiar with XPath. I found a great post on using Firebug to check your XPath. Now I can tet out my XPath and make sure it actually selects the proper page element before I run my test and bang my head against the wall!