Bike Repair Classes
Time's Up; 3/26 at 6:30 p.m.; 156 Rivington St., nr. Suffolk St.
99 S. 6th St., nr. Bedford Ave.; Williamsburg
Get acquainted with the basics of bicycle maintenance at a series of free classes offered by grassroots environmental group Time's Up. Hour-long sessions are devoted to cups and cone bearings, wheels and spokes, and more, with the opportunity to apply what you've learned during weekly bike repair workshops. Mechanics are on hand to answer questions, and there's even a 24-hour bike-parts vending machine outside. The organization also offers female-led repair classes for women and trans-people on Tuesdays at their Brooklyn location. Check out the full calendar of classes here.
Absolute Beginners Yoga
LaunchPad; 3/25 at 11:30 a.m.; 721 Franklin Ave., nr. Park Pl., Crown Heights; 646-494-7211
If you've managed to live in New York for any length of time without unrolling a mat and practicing your Downward Dog, congratulations! But if you've got an itch to give yoga a try, consider this free weekly class at LaunchPad Brooklyn, designed for the most basic of beginners. Their calendar is full of other classes and events, too, from beginner's calligraphy to a monthly kids' book club.
Shape Up NYC: Kickboxing
J. Hood Wright Recreation Center; Weds at 7:30 p.m.; 351 Fort Washington Ave., nr. W. 176th St.; 212-927-1563
The city's Shape Up program offers a variety of free fitness classes each week at dozens of locations across the five boroughs. Instructor Lynze Schiller leads this weekly workout of mixed martial arts movements, perfect for burning fat, toning up, or just letting loose.
Guest Night Dance Party
Dance Manhattan; 3/23 at 8 p.m.; 39 W. 19th St., nr Sixth Ave., fifth fl.; 212-807-0802
The popular dance studio opens its doors the last Friday of every month for a great big (free) shindig for people of all ages and skill levels. The evening kicks off with a free lesson in ballroom dancing at 8 p.m., followed by a party at 9 and a show—usually demonstrations from teachers or students' groups—at 10:30. There's no need for specific equipment or even a partner. Just bring a pair of shoes!
Tour the Federal Reserve Bank
Federal Reserve Bank of New York; M-F at 11:15 a.m., noon, 1:15 p.m., 2:30 p.m., 3:15 p.m., and 4 p.m.; 33 Liberty St., nr. Nassau St.; 212-720-6130
Free guided tours of the Fed building are an excellent excuse to brush up on your knowledge of monetary policy. That the tour ends with a peek at the building's massive underground stash of gold bars (under heavily-armed supervision, of course) is just icing on the cake.
Healthy Cooking for Kids
Williams-Sonoma; 3/25, times vary by location; See williams-sonoma.com for details
Master a host of new tricks for rounding out your little one's plate at this free class, part of the homewares chain's weekly Cooking Techniques series. Learn family-friendly recipes, discover new ways to prepare old favorites that will appeal to the younger set, and taste the dishes you prepare. Class sizes are limited—call your local store to RSVP.
Museum of Arts & Design; dates and times vary; 2 Columbus Circle; nr. 58th St.; 212-299-7777
The barter system is the founding principle of Trade School, where teachers offer knowledge in exchange for items large and small (and even intangible, like help finding an apartment). Crafty classes like embroidery, kite making, and book folding are offered alongside lectures on topics including "How to Delete Your Facebook and Feel Good About It" and "Burnout Prevention for Activists." Some weekend classes will be held at the Cuchifritos project space at 120 Essex Street, near Rivington Street, through April 30. See the full list of course offerings here.