This is a great book for anyone running a bootstrapped business. It is based on the Corelytics software product, which is a financial analysis tool that syncs with Quickbooks to provide trendline, progress against goals, and other real time financial metrics for startups. This gives you a view of where things are headed rather than a "too late" picture in your financials.

http://www.amazon.com/Pulse-Understanding-Vital-Signs-Busine...