Traditional first move

Although there is no requirement on where to play your first move, there is a tradition.

Trevoke from GoDiscussions.com posted the details:

The tradition is 'kata' - form, japanese etiquette. Black is the weaker player and will then play closer to White, in a reaching move which can be extended as a bow. This leaves White's right-hand corner free, as a courtesy, so that White's first move does not force White to reach unless they choose to.

There is definitely no requirement on the exact spot to play, but playing in the upper right hand corner shows you know a little Go etiquette!