am interested in Artificial Intelligence and want to build a career in this field. Which courses and universities would be best for me?

No, Trinity College Dublin is not really better than Harvard as Harvard's ranking is generally better than TCD.

Actually, Trinity is known as the Harvard of Ireland which means that this is also a great institution for higher learning. 

Yes, this can be considered really cool for Harvard University, as it covers the full tuition cost, housing, meals and other expenses if they can get in. 

Harvard is known to provide the 100% of demonstrated financial need for all Indian students.

Yes, it is important for Indian students to submit the CSS profile, supporting financial documentation and tax returns like the bank statements or income certificates. 

The CSS is the main application which can be filed via the college board and it also allows applicants to report income, expens

No, Indian students would not necessarily be considered automatically for scholarships here. While there is no scholarship application form, the students should still submit a financial aid application.

For the students admitted,   Harvard University meets 100% of their demonstrated need scholar

As a full-time student at MIT, students can cross-register for classes at Harvard University – Faculty of Arts and Sciences and one of the professional schools (some exceptions applicable). First-year UG student is not eligible for this. There is no additional fees to cross-register. Fees may apply