Let S be that portion of the plane $\displaystyle x + 2y + 2z = 4$ lying in the first octant, oriented with outward normal pointing upward.

Find $\displaystyle \int_{S}{zdx\wedge dy + ydz\wedge dx + xdy\wedge dz}$.

This is my first time trying to do a problem with a two-form, and I'm not really sure where to begin. Also, the book is not very helpful with understanding the wedge notation.