The main topic of IRS publication 526 is charitable contributions. Not all the charitable contributions can be deducted from your tax. There is a list of organizations, to which you can donate and deduct your donation later on from your taxes. This subject is discussed in the IRS publication 526.
It also talks about the types of charitable contributions, which can be deducted from your taxes. The publication provides you with a list of such deductible and non deductible contributions.
It informs you what form you should fill in for claiming the deduction. IRS publication 526 also tells you how to properly deduct contributions that benefit you. There are cases, when you make a charitable donation and get a certain benefit for it. Then you have to calculate the amount of contribution, subjected for deduction. The document tells you how this can be done.
Another subject discussed in IRS publication 526 is deducting some expenses from your tax, related to having a student living under your roof. Some of such expenses can be deducted from your tax and you can learn how to do it from this very publication. Finally, the document tells you how to deduct contributions of property from your tax.