Portland Book Festival Workshops The Portland Book Festival offers a series of writing workshops taught by local and national writers. ADVANCED REGISTRATION FOR BOOK FESTIVAL WORKSHOPS IS NOW CLOSED. You can register for classes with remaining spots at the NW Film Center in person on Saturday. Two-Hour Writing Workshops The following workshops will be held at the Northwest Film Center (934 SW Salmon St.). Tuition is $75. These workshops are for adults 18 and older. In addition to the workshops at Northwest Film Center, there are three classes in the Kinney Classroom at the Art Museum.These classes are free and designed for the ages listed. No refunds on workshops will be given after Thursday, November 7. There is a $15 processing fee for cancellations. No products were found matching your selection.