I think that Munkres offeres a nice introduction to general topology. If you're more advanced, then you can try Willard or Kelley.
The book "counterexamples in topology" by Steen and Seebach is not really a textbook, but it's a must for everybody who's serious about topology!
There's a thread from last month 22 Dec. on this question and one from the month before on 6 Nov. Searching with google or the local site search will bring these up quickly along with many others.