This page attempts to reference the most useful information available on the web on the topic of starting a software or web business. If you see any link we missed, please let us know!
Starting Your Own Business
How to Meet Your Next Cofounder
10 Stupid Mistakes Made By The Newly Self-Employed
Profitable in 3 weeks, real data on what happens at the beginning of a 1-person project
Two Years of the Real Numbers of an Internet Startup
Raising Money
The Basics of Early Stage Issues - A Guide For Entrepreneurs (very complete information on legal issues of startups that will raise seed and VC rounds)
VentureHacks (learn the tricks that VCs play)
The Funded (gossip on individual VC firms and partners, also a good place to get advice)
Reaching Customers and Selling Online
5 Tips For Focusing On Your Micro-ISV
Tools
Many places online can host source code repositories or bug tracking. We like CodeSpaces for instance.
Resources for Online Entrepreneurs has a fairly comprehensive list of tools, payment processors, etc...
Communities To Get More Help
A must read: the Business of Software FAQ has answers for most common questions. If you need more advice, join the The Business Of Software discussion groups.