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Some notes on:
Some puzzles:
Assorted proofs:
To
the
tune
of
"Octopus's
Garden": Don't want to be / Where geometry Has gone on holiday / At the beach Sanity demands / Creatures with hands Not a million tentacles / On a leech! From Cthulhu's Garden in Cosma Shalizi's Cthulhu songbook. 
Dianne Xu has written the best exposition I've seen of the Classification Theorem for Compact Surface. [classification.ps] [classification.pdf]
The Topology Q+A Board message board (Formerly known as 'Ask a Topologist') is hosted by The Topology Atlas
Topology Without Tears, by Sydney A. Morris
One of my favourite texts is "Topology via Logic" [Cambridge University Press], by Stephen J Vickers which looks at nonHausdorf topologies and their applications to computer science (well, logic in general). Another paper by the same author also related to computer science is Geometric Logic in Computer Science


