That's definitely a modern tee (mid 2000s).
As for identifying...
I used this site as a t shirt label resource for a while.
http://goo.gl/uJqKA8
This one is good for t shirts as well other vintage clothing.
http://goo.gl/3PB3uw
Also, defunkd has a decent label resource.
http://goo.gl/PxZfZ7
Eventually, you gain an eye for labels and do not need to reference these very often. You can also join communities such as Reddit and Defunkd that have a plethora of information and people willing to help you out!
Hope this helps!