Salt Pump Climbing Gym in Scarborough, Maine has several climbing seminars that are held each month. I signed up for their crack climbing seminar which is limited to 6 climbers. Janet Wilkerson taught the seminar and we learned hand jamming and finger locking. We met upstairs and introduced ourselves, then climbed and down-climbed 5 bouldering routes for warm up. There are 3 floor-to-ceiling crack routes and each is a different size, offering practice for jams, from fingers to fist, depending on hand size. We moved downstairs to the crack routes and broke up into two groups. Janet offered beta to everyone and we got to practice hand, foot and finger locking jamming techniques. In addition to the instruction, I really enjoyed the opportunity to practice techniques with other climbers who are motivated to climb crack! If you want to give crack climbing a try, sign up for the 2-hour seminar. You'll learn essential techniques to get you started, and have fun climbing crack routes!