Several sources out there walk you through filing your taxes on line for free, and free submission to the IRS for a quick rebate. I've used www.taxact.com for the past few years. Has worked well.
They make money when you upgrade, or get the state tax filing software. I've never upgraded. However many states, like Ohio, allow you to easily file your taxes online for free, and get a quick refund. A lot of people are not aware of this state tax filing for free. Well know you know!