I have been to Costa Rica four times in the last three years. I love this place. It has a slow pace of life, wonderful people and beautiful beaches. Below are some great webcams for views of the local surf and current weather conditions.
Famous Tamarindo, known for its world class surfing. It is a small touristy town with shops, restaurants and bars right on the beach.
Adjacent to Tamarindo is, the less crowded and touristy, Playa Grande. There is no real center of town, and only a few shops. Go here to get away.