Photos: Best things to do this weekend

UNIVERSAL CITY, CA - JULY 27: Host Brandon T. Jackson speaks on-stage at Variety's Power of Youth presented by Hasbro, Inc. and generationOn at Universal Studios Backlot on July 27, 2013 in Universal City, California. (Photo by Alison Buck/Getty Images for Variety)

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7/3: ROCKSTAR ENERGY DRINK MAYHEM FESTIVAL | This is a heavy lineup, topped by Slayer and King Diamond. Also playing: HELLYEAH, the Devil Wears Prada, Whitechapel, Thy Art Is Murder, Jungle Rot, Sister Sin, Sworn In, Shattered Sun, Feed Her to the Sharks, Code Orange and Kissing Candice. DETAILS: 1 p.m. Friday, July 3. Ak-Chin Pavilion, 2121 N. 83rd Ave., Phoenix. $40.25-$83.31. 800-745-3000, ticketmaster.com.

arrives at the Series Premiere Of AMC's "Better Call Saul" at Regal Cinemas L.A. Live on January 29, 2015 in Los Angeles, California.

Wilco's lead singer Jeff Tweedy sings at the Bonnaroo Music & Arts Festival on Friday, June 14, 2013 in Manchester, Tenn.

Taylor Hicks. Credit: Modern Whomp.

Tim Cord of American Hitmen.

A Mexican Amberwing dragonfly rests for a moment at the Riparian Preserve at Water Ranch in Gilbert. Several ponds at the preserve make it an ideal habitat for dragonflies. Credit: Bob Witzeman.

7/4: COCA-COLA SWAP MEET | The Coca-Cola Collectors Club will bring its 41st annual convention to the Renaissance Glendale Hotel & Spa at Westgate. The public is invited to the meet, a perfect prelude to patriotic plans. Collectors will sell memorabilia, including bottles, signs, calendars and promotional items. Experts can share the history and estimate the value of your items. DETAILS: 10 a.m.-2 p.m. Saturday, July 4. 9495 W. Coyotes Blvd., Glendale. Free. 312-296-7883, cocacolaclub.org/upcoming-events.

7/5: FREE SUMMER SUNDAYS AT THE HEARD | Take advantage of free admission Sundays in July and participate in cultural performances, artist demonstrations, crafts and more. Watch award-winning hoop dancer Derrick Suwaima Davis perform July 5, along with Navajo textile weaver Marilou Schultz. July 12 events include the YellowHouse Dancers, Hopi basket weaver Janette Chimerica and others. Enjoy performances by the Native Spirit Dancers and basket artist Anthony Belvado on July 19 along with the Yellow Bird Indian Dancers and pottery artist Lucille Maho on July 26. Children can participate in scavenger hunts and create their own superhero costumes. DETAILS: 11 a.m.-5 p.m. Sundays in July. Heard Museum, 2301 N. Central Ave., Phoenix. Free; $5 for “Super Heroes!” exhibit. 602-252-8840, heard.org.

7/5: ‘OUTLANDER’ AUTHOR EVENT | Paradise Valley author Diana Gabaldon will discuss the world of "Outlander" during a free event at Barnes & Noble in north Scottsdale. The hugely popular saga about time-traveling nurse Claire and dashing Scotsman Jamie has been told through eight books that have sold more than 17 million copies. That led to a Starz TV series that debuted last year to solid ratings and a rabid online fan base. Gabaldon will talk about the series (potential spoilers?) and sign the reissued edition of the first novel in the series ($18). There will be a trivia contest and fans are encouraged to dress in costume. A prize pack will be awarded; the set contains a poster from the TV show, Gabaldon's "The Outlandish Companion" and a set of DVDs that includes the first eight episodes of Season 1. DETAILS: 2 p.m. Sunday, July 5. Barnes & Noble, 10500 N. 90th St., Scottsdale. 480-391-0048, barnesandnoble.com.

THROUGH 9/30: ‘PROCESS AND MATERIALITY: THE BRONZE ARTISTRY OF JOHN COLEMAN WITH ERIK PETERSON’ | The exhibit details, through photographs, how bronze sculptures take shape before they're ready for display. The works are by John Coleman, considered one of the finest cowboy artists in America. More than 30 bronzes provide a stunning retrospective of Coleman's work. Peterson applies the patinas, which are the colored surfaces of a bronze that occurs either naturally as a result of oxidation or artificially through treatment with acid. DETAILS: Through Wednesday, Sept. 30. 9:30 a.m.-5 p.m. Tuesdays-Saturdays; 1 a.m.-5 p.m. Sundays; 9:30 a.m.-9 p.m. Thursdays for Scottsdale ArtWalk. Closed Mondays and Saturday, July 4. Western Spirit: Scottsdale's Museum of the West, 3830 N. Marshall Way. $13; $11 for age 65 or older and for active members of the military; $8 for ages 6-17. scottsdalemuseumwest.org.