If you' beg, borrow, or steal (or mebbe buy) a copy of THe FairTax Book it would help understand even more I think - or check the wealth of information on the FairTax website:
http://www.fairtax.org/research.html
or even read a few pages of the bill itself (it's an easy read and is actually shorter that the book, but the book is more entertaining):
http://thomas.loc.gov/cgi-bin/query/z?c109:H.R.25:
or check the wealth of information on the FairTax website:
Some more useful links with lots of information: