Learn to Fix A Flat at noon. Get one-on-one training and practice with one of our bikes, or bring your own bicycle. Second Sunday Fix-A-Flat classes are held in conjunction with Sunday Bike Repair Parties. Feel free to stay and help out or $10 suggested donation. Free, but RSVP. More info: Second Sundays – Sharing Wheels Community Bike Shop and Upcoming Events – Sharing Wheels Community Bike Shop