Currently I am looking for a new lense for my XTi. Considering I'm a college student I don't have a lot of money, but thankfully Christmas is here so I should be able to get some help buying a new lens 
I don't have a lot of money so I'm trying to stay at $600 or less. I know that limits me because of the prices of lenses, but that's all I can do for now.
I like to shoot just about everything, guess I'm looking for an all purpose lense. For instance, I like to shoot car shows, cars at the race track, animals, wildlife, landscape, people and just random things like leaves laying on water, stuff like that.
I really have no idea what to look at, currently I'm looking at the Tamron 28-75mm 2.8. It seems to be a good camera, takes nice photos and from the reviews I've read, for the price its a great buy.
If anyone could possibly steer me in the correct direction of what to buy I'd really appreciate it.
Thanks!

