Well, welcome to the west coast!
Things to do in Oregon, especially
Portland ,shouldn't be too hard to do. So here are a few of my picks:
Portland Saturday Market
This is one of the oldest outdoor markets in this region.
Portland Rose Garden
This is one of the most famous/popular things to do in Portland.
Ski Oregon
Ok, this one is a bit out of season but hey, i didn't want you to exclude some of the great things to do. So keep this one for future references.