For most folks, taxes start with withholding. See if you're doing it right.Learn the nitty-gritty of finding whether you have to file, and if so on what form and with which tax table.You had better know your deductions if you want to pay the least amount of tax.Credits are even better than deductions, because they reduce taxes more. Know which ones you qualify for.Plan to own a home? Raise a family? Start a business? As your life changes, so will your tax needs.These are the little details that are the difference between owing and not owing the IRS.