As of 2015, you can view and print electronic versions of IRS tax instruction booklets on the IRS website, IRS.gov. You also automatically receive an instruction booklet when you order any tax form from the IRS.
You can order up to 10 tax forms from the IRS, and the IRS sends you two copies of each form plus one copy of the related instruction booklets. Keep in mind that the IRS estimates that it takes seven to 15 days to process and ship a form order. If you need a booklet immediately, you can find it at IRS.gov under Forms & Pubs.