ask SQL expert here -- try catch in T-SQL

I wouldn't. Google has a lot more combined "experience" than I ever will. Considering that there are blogs from people who have been in the industry for 30+ years, and blogs from people that work for Microsoft. I would trust Google. I use Google all the time when I can't figure out how to do something.

A simple Google search for "sql try catch" would have given you tons of tutorials. The first on the list is http://msdn.microsoft.com/en-us/library/ms175976.aspx