Tell me the email of the customer named MARIA.
select email from customer where first_name = "MARIA"
Tell me all the information about her rentals.
select * from customer as t1 join rental as t2 on t1.customer_id = t2.customer_id where t1.first_name = "MARIA"
What is the first name and the last name of the customer who made the earliest rental?
select t1.first_name, t1.last_name from customer as t1 join rental as t2 on t1.customer_id = t2.customer_id order by t2.rental_date asc limit 1