Can I view my last year tax papers online for free

No - there is no way to view an old tax return on an IRS web site. Perhaps if you used a 3rd-party tax preparer they may have a system that alows you to see old returns. If you need info from the IRS regarding a previous year's return see the sticky at the top of this message board, "How to get a copy of an old tax return from the IRS."