The easiest way to get to a specific section in TurboTax is to use the search feature.
Log into your account and click Take Me to My Return (you must click this before performing the search below)
Click the search icon (magnifying glass in top right-hand corner)
Search for "1098T" and click the "jump to 1098T" link that appears
This will bring you to the Education Expenses section where you can add a student and related Form 1098-T information
You can also find this section under Federal Taxes -> Deductions and Credits -> Education Expenses (you may have to click Check for More Credits and Show All to get the full list to appear) -> Expenses and Scholarships (Form 1098T) section
