Things to Do This Weekend for (Mostly) Free

Tartan Week finishes up with the Tartan Day Parade up 6th Avenue today, or take in the all-day J-Cation food festival at the Japan Society. Both days, New York Classical Theater presents traveling performances of Hamlet at the World Financial Center.

Saturday

Books for NYC Schools Day at the Center for Fiction -- all-day workshops featuring authors (including Elizabeth Gilbert, Rick Moody, Kurt Andersen, Sam Lipsyte, and Jamaica Kincaid) The price of admission: donate two books for kids.

Ace in the Hole, maybe the most dazzlingly cynical movie ever made about the press, at the Film Forum ($12)

Annual Shearing of the Heather, Fort Tryon Park

Kid's Comic Con in the Bronx ($5, kids under 18 free)

Soul Power, a concert movie featuring James Brown, B.B. King, Bill Withers, and Celia Cruz, in the Sony Wonder Lab's HD theater

Little League Opening Day Parade, Prospect Park

East Coast vs. West Coast B-Boy Breakdancing Battle at Queens Community House

Tree day at Rufus King Manor

Darcy James Argue's Secret Society play the Galapagos Art Space ($15)

Sunday

Census parade, Jamaica

John Tartaglia (Shrek, Avenue Q) previews his new musical at Barnes and Noble

Proteus Gowanus Gallery tour

Scoundrel tour of Green-Wood Cemetery ($10)

Passover Scavenger Hunt in the Museum at Eldridge Street ($15/family)

All Weekend

NY International Auto Show ($14 adult, $4 children 2-14)

Museum of Comic and Cartoon Art Festival in the 69th Regiment Armory ($12/day, $20 weekend pass)

Children's Carnival with free rides and a petting zoo, Queens Farm Museum ($9)