Can I claim my college tuition ? no one else can claim me because I am 26 years old.

[taxfileskjsk]

Yes, tuition expenses are deductible, depending on other itemized deduction will total more than standard deduction.

[xmasbaby0]

Education credits are not itemized deductions, and are not subject to the requirement to exceed the standard deduction.

[Hal_Al]

Grad students are not eligible for the  the American Opportunity Credit. So, they must have a tax liability to get any benefit from the Lifetime Learning tuition credit

[xmasbaby0]

Yes you can enter your 1098T.  If you are not a dependent and not filing married filing separately, then you may be able to get an education credit.

https://ttlc.intuit.com/questions/1901172-what-education-tax-credits-are-available     

https://ttlc.intuit.com/questions/1899852-what-are-considered-qualified-education-expenses

https://ttlc.intuit.com/questions/2976047-what-are-examples-of-education-expenses