Five Things You Need to Know Today: August 16

1.  at  at 7:30am. The event is open to everyone. The cost is $12 for one class or $100 for a 10-class pass. For more information, call 508-696-4513 or email mj@­sacre­dcircleofyoga.­com. 

2. Today kicks off the  at the . The 151st Martha's Vineyard Agricultural Fair takes place on August 16, 17, 18 and 19 in West Tisbury. Rides by Cushing Amusements. There is a livestock show, a fiber tent, hall exhibits and tons of food and fun for the whole family. The fair begins at 10:00am and ends at 11:00pm and is $10 for adults and $5 for kids. For more information, call 508-693-9549. 

3.  at . Visit with the artists and gallery owners on Dukes County Avenue, and enjoy light refreshments. Most galleries are open until 8pm every Thursday night. The event is free. For more information, call 508-560-5614. 

4. Tonight there will be a screening of "How to Start a Revolution" at the Katherine . The movie portrays non-violent action in Serbia, Iran, Egypt. Inspired by Gene Sharpe, author of "From Dictatorship to Democracy." The movie begins at 7:30 and there is a $5 suggested donation. For more information, call 508-693-7741 or email psb@senseofwondercreations.org. 

5.  Country and blues music with Shawn Barber, Geordi Gude, Stu Gardner, Rob Myers, Larry Laverdure, and Elissa Turnbull. Dancing from 8:00pm to 10:00pm and is $10. For more information, call 508.645.9662 or email admin@­dance­theyard.­org.