The only things I can think of that you can carry over are the home energy efficiency credit, charity contributions in excess of the AGI limits for different types of charities, and capital losses. Where applicable, it's automatic in the program. The IRS and Turbotax keep track, if you use turbotax each year, the program will do it for you. If you want to use a different preparer next year, there will be a carry forward worksheet in your tax packet when you download the PDF or print it out.
Most deductions do not carry over. The whole point of (for example) the $10,000 cap on state and local taxes is to reduce deductions and make some people pay more tax, that doesn't happen if you can stack up unused amounts and push them forward.
