
Two websites have become invaluable resources. However, I agree with Kathy Harrison, the author of
Just In Case: How to be Self-Sufficient When the Unexpected Happens: when the unexpected happens, you usually don't have access to the Internet. Experience is all-important, but if you don't have that, some
written notes might help.
Here's a PDF of the Army Survival Handbook, FM 21-76-1, from June 1999.
Here's the ultimate backpacker's guide:
Survival Topics. The fire-starter section is amazing.
Here's Harrison's
blog and
her book.