Marketing guru Seth Godin (author of Purple Cow and Free Prize Inside) has released a previous book in a free PDF format for a limited time only: The Bootstrapper’s Bible.
The 103-page PDF covers the typical “bootstrapper” in business, the person who picks themselves up by their own bootstraps, making a business happen with few resources. A nice (free) source for ideas and inspiration. Godin also comments on his own blog about the successfulness of spreading an idea when it’s offered for free.