My favorite place on the northern Oregon Coast is Depoe Bay, a small, picturesque village between Lincoln City and Newport. It has the world's smallest harbor, which is the location of some scenes in the movie "One flew over the Cocoo's Nest", and also a year 'round resident herd of whales. At the north end of the village is "Boiler Bay", which has one of the two best tide pool areas in Oregon.
Newport to the south also has a picturesque harbor, as well as the Oregon Coast Aquarium. Further south from here the coast stays pretty spectacular all the way to Florence. Just north of Florence is the Heceta Head Lighthouse, a great location for sunset shots. They are best to take from a vista point along the coast highway (US 101) south of the lighthouse and just past the tunnel.
Not much information, but it will get you started.