# Topological K-theory references

I am interesting in learning about (topological) K-theory. As far as I can see there are 3 main references used:

1) Atiyah's book: This looks to be very readable and requires minimal pre-requesities. However, the big downside is there are no exercises

2) Allan Hatcher's online notes: If his Algebraic Topology book is any guide, this should be an excellent readable account of K-theory. I note that this is unfinished however.

3) Karoubi's Book: A nice looking book - perhaps less readable than Atiyah? (personal opinion, based on a quick scan)

Are there any other references/on-line notes available? I am probably leaning towards an Atiyah/Hatcher combination.

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There's also Segal's paper "Equivariant K-Theory" if you want your K-Theory to have a $G$ action. He runs through some of the basics. – Joe Johnson 126 Apr 22 '11 at 10:41
swoosh- wham. Yes it can. (Wiki-hammered) – Willie Wong Apr 22 '11 at 13:40