Ask him to teach me to use Shadow Clones... or maybe just ask him to teach me how to use Chakra... then Shadow Clones.
That is probably the most useful Jutsu for this world... or atleast for a college student. I can have one clone study, while the other cleans, while I go out. Then dispel the Jutsu and learn everything my cloned study, feel the accomplishment of cleaning my house, and feel great because I relaxed the entire day. Oh the possibilities! You could become a Genius with this Jutsu.