It's fairly old, but this is still a good basic reference to SEO and link-building
Just be aware that IPL2 is no longer accepting link submissions. You have to register as an editor for joeant to be able to submit to them (which is free, and you don't have to submit any other links, though it helps).
This one also has some good ideas:
How to build links fast
...and some hilariously dumb ones at the end (including "sue google" and the RIAA technique). :)
Anybody have any more recent good tutorials on link-building?