The first is our own publication resource section at Entrepreneur.com. There are a number of publications and eBooks available that give extensive information about starting up a business--from capitalization to marketing to operations and everything in between.
In terms of franchise specific information, I would recommend supplementing the great information available at Entrepreneur with other resources available from the International Franchise Association. You can find them at www.franchise.org and they are a non-profit industry support group with lots of resources you can access.
Hope this helps!