The Internal Revenue Service: You can find a ton of useful information and download tax forms from the IRS Web site. You can also call (800) 829-1040 to speak to an IRS representative or go to your local IRS office (click on “individuals” and then “contact my local office” to find an office near you. June-February are the best months to go with a list of questions.

Tax Regulations for Your State: You can use this site to obtain information about your state's tax breaks.