New Personal Finance Book for the Self-Employed

I just received a new book in the mail from Joseph D'Agnese and Denise Kiernan. They are both journalists who have written for the New York Times and the Wall Street Journal, and they have now written a personal finance book together specifically for the self-employed and part-timers, called The Money Book. They did interview me for parts of it, so I may be a bit biased, but after briefly skimming it, I think it is an easy to follow read that could benefit many people (not just personal finance geeks like myself). I will read the book more in depth, but upon first skim, I had to find some calculator worthy section I could use to develop some neat online tool. Therefore I have created my own Money Book calculator. This allows you to enter your monthly income and also specify how much to contribute to specific emergency, tax and retirement accounts and also all your "mandatory" monthly expenses. After entering your numbers it tells you how much you have left for discretionary spending. Note that you should not take whatever is left and just blow it all on wild partying, but if that number is large, it means you can increase your percentages for retirement and other savings instruments. I also noticed their mandatory expenses do not include food and groceries so that must come out of discretionary income too. In this lingering poor employment environment where less people are finding conventional jobs and more people have "side jobs" to supplement their income, a book like this fills an important need. It should help many people who now are generating income from unconventional sources who have always just been employees at a large organization before, and never had to deal with doing so much on their own.