http://www.principlesofaccounting.com/
If you are looking for a college level book to follow:
Crash Course in Accounting and Financial Statement Analysis, 2nd Edition
Matan Feldman
Arkady Libman
ISBN: 978-0-470-04701-9
Accounting Principles, 7th Edition, with PepsiCo Annual Report
Jerry J. Weygandt, Univ. of Wisconsin, Madison
Donald E. Kieso, Northern Illinois Univ.
Paul D. Kimmel, Univ. of Wisconsin-Milwaukee
http://wiki.answers.com/Q/Special:Booksources&isbn=9780471448570