Explore Portland is a great website for Portland families and those coming to visit Portland.  I recommend signing up for the newsletter because they are frequent and relevant.  For example, one of my favorities is "Rainy Day Favorites".  In Oregon, this tip is essential ... what to do when it is raining.  Most of us, even us newbies from California, just put on rain gear and trek out.  There are some good outdoor spots on the list and some great indoor spots that I would not have known about.