Get a move on.RIDEArt on TrackWhat: An eight-car El train circles the Loop; each car holds a provocative installation by an artist or collective.Why: DailyCandy readers get half-off tickets (reg. $10); enter code artcandy at checkout.When: Sat., 5-10 p.m.Where: Board the train at the Adams/Wabash or Washington/Wells CTA platforms. Tickets online at artontrack.com.EATUrban Burger Bar OpensWhat: The cattle calls keep coming. This time chef John McLean answers with fries, thick Midwest beef patties, milk shakes, and 60 craft brews. Why: McLean’s neighboring pizzeria, Somo Wood Fired, is right next door.When: Mon.-Thurs., 11 a.m.-11 p.m.; Fri. & Sat., 11 a.m.-midnight; Sun., 11 a.m.-9:30 p.m.Where: 1578 N. Clybourn St., at Halsted St. (312-255-0055).BUYIndie Fashion Pop-Up SaleWhat: Cerato Boutique, Tangerine, Perchance, and Belly Dance Maternity pool together to sell spring/summer merch for 60-80 percent off.Why: Blink-and-you’ll-miss-them finds from Loeffler Randall, Anna Fong, Blake Standard, and AG Jeans.When: Fri., 1-5 p.m.; Sat., 10 a.m.-3 p.m.Where: 2215 N. Halsted St., at Webster St.SAMPLEFrietkoten Belgian Beer and Fry TastingWhat: Try six brews (we love Saison Dupont and Avril Biere de Table) and a generous helping of fries for $15.Why: Sauces like wasabi mayo, cheesy queso, and sweet chili ketchup are yours for the sopping.When: Today, 4:30-7:30 p.m.Where: Chicago French Market, 131 N. Clinton St., b/t Washington Blvd. & Lake St. (312-575-0306).HEAROur Lollapalooza PicksWhat: It’s all about Dragonette, The Cribs, Metric, Dan Black, Stars, The Antlers, and Neon Hitch.Why: We wouldn’t steer you wrong.When: Fri.-Sun. Schedule online at lollapalooza.com.Where: Grant Park, Michigan Ave., at Congress Pkwy. Tickets ($90/day; $215/three-day pass) online at lollapalooza.com.Photo: Katrina Nelken / Courtesy of Art on TrackUp to 60% off Bread & ButterBread & Butter takes staples to a whole new level with silky-soft tees, from boyfriend crews to flattering scoop-necks, in a rainbow of colors. Stock up while they’re up to 60% off on Swirl.