Cheap$kate: This week's best FREE events in NYC

Tribeca Film Fest opening with Sir Elton doc, concert
Spend a night at the drive-in ... sort of. The Tribeca Film Festival Drive-In at the World Financial Center on Wednesday will feature the world premiere of Cameron Crowe’s “The Union,” a documentary about the collaboration between Elton John and Leon Russell. Following the screening, Sir Elton himself will perform a FREE concert. Nab a necessary TFF wristband at 4 p.m. at the BMCC Tribeca Performing Arts Center. Get there early. Seriously. (Wednesday, 8:15 p.m. screening, FREE, WFC Plaza, 200 Vesey St., 866-941-FEST, tribecafilm.com)

TreeLC Workshop
If you’re a tree-hugger at heart — or just someone who cares about the environment — get in that Earth Month spirit with the TreeLC Workshop at the Carroll St. Garden in Brooklyn. You’ll learn how to properly provide tender loving care for the green beauties in your life. (Saturday, 2-4 p.m., FREE, Carroll St. Garden, 534 Carroll St., Park Slope, milliontreesnyc.org)

Reading of Dante’s ‘Inferno’
You’re probably safe from the rings of hell inside a cathedral, so don’t worry about your soul and just enjoy the poetry of Dante’s “Inferno” during the Maundy Thursday vigil at the Cathedral of St. John the Divine. (Thursday, 9 p.m.-midnight, Cathedral of St. John the Divine, 112th St. and Amsterdam Ave., 212-316-7490, stjohndivine.org)

Michigan State Fair
We’re pretty sure there’s more to Michigan than GM, Motown and Eminem. There must be. Find out all there is to know about the “Great Lake State” this Sunday in the heart of Brooklyn at the Bell House’s latest installment of its State Fair series. (Sunday, 3-7 p.m., FREE, the Bell House, 149 Seventh St., Gowanus, 718-643-6510, thebellhouseny.com)

Spike Lee
Spike Lee’s latest documentary picks up where his award-winning 2006 one left off: the continued rebirth of New Orleans post-Katrina’s devastation. Southern-born, Brooklyn-raised Lee will be signing copies of “If God Is Willing and da Creek Don’t Rise” at Barnes & Noble Union Square. (Wednesday, 5 p.m., FREE, B&N Union Square, 33 E. 17th St., 212-253-0810, bn.com)

Kate Payne
Homemaking can be quite tiring nowadays with our otherwise very full schedules. But Kate Payne is making it a bit easier with “The Hip Girl’s Guide to Homemaking.” Meet the author at the BookMark Shoppe this Wednesday. (Wednesday, 7 p.m., FREE, BookMark Shoppe, 8415 Third Ave., Bay Ridge, 718-833-5115, bookmarkshoppe.com)

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