This article is from the US Taxes FAQ, by Wayne Ross email@example.com.
The IRS produces a vast number of publications. These range
from the comprehensive "Your Federal Income Tax" to specific topics
like "Accounting Periods and Methods". IRS Publication 910
(available via IRS homepage) lists many of these publications, and
provides a topical index to the publications. You may also be able
to find copies of many of the publications at your public library.
The advantage of these publications are that they are free and
authoritative, and if followed are seldom disputed by the IRS. The
disadvantage is that they reflect the IRS position which may not
always be the most taxpayer favorable or reflect adverse court