Language Exchange Night: 7 p.m., Trident Booksellers & Cafe, 940 Pearl St., Boulder. Lively conversation for language learners, native speakers and everyone in between. There are regularly over 10 languages spoken and spirited discussions. tridentcafe.com.

Read Together English Literacy Book Club: 5:30 p.m., NoBo Library, 4500 13th St., Boulder. Come join BoulderReads’ book club, which provides a friendly and informal group environment for learners to practice their English skills. The book club meets the last Monday of each month. Each session, talk about the readings, share thoughts and practice reading and speaking English. Snacks, reading materials and extra support are provided. Learners can join at anytime. calendar.boulderlibrary.org.

Kids rides on the Tebo Train: 9:30 a.m. Tuesday, Pearl Street Mall, 1242 Pearl St., Boulder. Children ages 10 and under (along with accompanying adults) will chug along Pearl Street in this one-of-a-kind experience. The Summer Tebo Train boards in front of Wells Fargo at the corner of 13th and Pearl. The rides start at 9:30 a.m. each day. The last train leaves the station at 11 a.m. sharp. Free, 303-449-3774, boulderdowntown.com.

Debutiful Debuts: 6:30 p.m. Tuesday, Boulder Book Store, 1107 Pearl St., Boulder. Roohi Choudhry, Kerry Donoghue, Shasta Grant, Laura Venita Green and Miranda Schmidt will speak about and sign their new books. Adam Vitcavage, founder of “Debutiful,” will moderate this discussion. $5, boulderbookstore.net.

Intro to Butterfly ID for Birdwatchers: 7:15 p.m. Tuesday, Unitarian Universalist Church of Boulder, 5001 Pennsylvania Ave., Boulder. Begin learning about the fascinating world of butterflies in Boulder County with basics for identifying different species, when and where to find them, their interconnected relationships with plants and photography tips. This free program will help participants enjoy observing butterflies all season long. Free, boulderaudubon.org.

Ravin’Wolf concert: 3:30 p.m. Wednesday, Boulder County Farmer’s Market, 13th and Canyon Boulevard, Boulder. Support local family farms at the Boulder Farmer’s Market alongside the acoustic musings of Ravin’Wolf, the eclectic, grateful, folk and rock blues duo. The market is a rousing produce party on the beautiful Boulder Creek. Fresh produce, honey, flowers, homemade pastas, salsas, breads, jerky and more. Free, 720-606-1733, bcfm.org.

Romance Book Club: 5:30 p.m. Wednesday, NoBo Library, 4500 13th St., Boulder. From dragon shifters to hockey boyfriends and everything in between, this club gets together to talk romance. Romance Book Club meets every fourth Wednesday to read and discuss romance books with the people who love them. May’s selection is “The Proposal,” by Mary Balogh. calendar.boulderlibrary.org.

“No One Aboard” book signing: 6:30 p.m. Wednesday, Boulder Book Store, 1107 Pearl St., Boulder. Emy McGuire will speak about and sign her new book “No One Aboard.” $5, boulderbookstore.net.

Many Mountains concert: 6 p.m. Thursday, Moxy Boulder, 1247 Pleasant St., Boulder. Many Mountains is a folk-rock duo from Colorado. Forming in 2013, KR Nelson and Dustin Moran bring a genre-bending sound to folk-rock through their unique song arrangements and writing styles. From Gillian Welch to The Rolling Stones, the range of musical influences trickle through their music to create something fresh yet familiar. A kaleidoscope of sound, songs are interlaced with vocal harmonies and leads that alternate between the two songwriters. bandsintown.com.

“28 Days in Darkness” book signing: 6:30 p.m. Thursday, Boulder Book Store, 1107 Pearl St., Boulder. Traver Boehm will speak about and sign his new book “28 Days in Darkness — A Journey from the Depth of Despair to the Joy of Awakening.” $5, boulderbookstore.net.

Optimistic Personality Disorder comedy show: 7 p.m. Thursday, Dairy Arts Center, 2590 Walnut St., Boulder. Optimistic Personality Disorder is a hilariously healing one-woman comedy show that blends live comedy, theatrical storytelling and real-life wisdom into an unforgettable night. It’s the kind of live performance that proves laughter really is the best therapy. From cringe-worthy parenting moments to wildly inappropriate dating stories, Merit Kahn turns 50 years of life into a comedy cocktail of real talk, raw emotion and razor-sharp wit. $30, 720-980-1286, thedairy.org.

Front Porch concert: 7 p.m. Friday, Gold Hill Inn, 401 Main St., Boulder. Front Porch is high energy bluegrass blended with an old time mountain sound. The band consists of Petey Wesley on banjo and fiddle, Alex Hawf on mandolin, John Henry on guitar and Cameron Keeling on bass. Each member sings lead and harmony vocals, bringing a diverse style of authentic songwriting to their original music. bandsintown.com.

Mark Hummel concert: 8 p.m. Friday, Roots Music Project, 4747 Pearl, Suite V3A, Boulder. Mark Hummel is a Grammy-nominated, Blues Music Award winning American blues harmonica player, vocalist, songwriter and long-time bandleader of The Blues Survivors. Since 1991, Hummel has produced the Blues Harmonica Blowout tour, of which he is also a featured performer. The shows have featured blues harmonica players such as James Cotton, Carey Bell and Charlie Musselwhite. Although he is typically identified as performing West Coast blues, Hummel is also proficient in Delta blues, Chicago blues, swing and jazz styles. bandsintown.com.

Editor’s note: Availability and scheduling of events may be subject to change.