Clases gratuitas

Mahjong: a free program at San Mateo County Libraries, Portola Valley (765 Portola Road, Portola Valley, CA 94028). When: Nov 13 and Nov 20, 2026, 11:00 AM to 1:00 PM. Come join our dedicated Mahjong group! For: Adults (19+), Adults (55+). Drop in, no registration needed. Full details on the library's page.

In-Person English Conversation Club: a free program at San Mateo County Libraries, Foster City (1000 East Hillsdale Boulevard, Foster City, CA 94404). When: Tuesdays, Nov 10 to 24, 2026, 1:45 PM to 3:00 PM. Improve your English and make new friends! For: Adults (19+). Drop in, no registration needed. Full details on the library's page.

Chess Club: a free program at Contra Costa County Library, Hercules (109 Civic Drive, Hercules, CA 94547). When: Wednesday, Dec 2, 2026, 3:30 PM to 5:30 PM. Welcome to Hercules Library's Chess Club! For: Children (6 to 9 years), Teens (13 to 18 years), Tweens (9 to 12 years). Drop in, no registration needed. Full details on the library's page.

Important: free, but you need to register online for free first. Pleasant Hill Library Plant Swap 🌱: a free program at Contra Costa County Library, Pleasant Hill (2 Monticello Avenue, Pleasant Hill, CA 94523). When: Saturday, Nov 14, 2026, 10:00 AM to 12:00 PM. Bring a plant, take a plant! For: Adults, All Ages. Full details on the library's page.

Insiders: a free program at Contra Costa County Library, Lafayette (3491 Mt. Diablo Boulevard, Lafayette, CA 94549). When: Friday, Dec 4, 2026, 11:00 AM to 12:00 PM. On the 1st Friday of every month, our Insiders program welcomes adults with intellectual and developmental disabilities to have fun exploring library resources, developing new skills, and connecting with others in the... For: Adults. Drop in, no registration needed. Full details on the library's page.

Hooks & Needles: a free program at Contra Costa County Library, El Cerrito (6510 Stockton Avenue, El Cerrito, CA 94530). When: Tuesday, Dec 1, 2026, 6:15 PM to 7:30 PM. Every 1st Tuesday of each month, crafters of all ages and skill levels are welcome to bring any self-directed hook or needle project (knit, crochet, embroidery, etc.) to El Cerrito Library. For: Adults, All Ages, Children (6 to 9 years), Seniors, Teens (13 to 18 years), Tweens (9 to 12 years). Drop in, no registration needed. Full details on the library's page.

Meditation Mondays: a free program at Contra Costa County Library, Concord (2900 Salvio Street, Concord, CA 94519). When: Monday, Nov 16, 2026, 1:00 PM to 3:00 PM. The Library Wellness Team offers a guided meditation to relax and re-center the mind, body, and spirit. For: Adults, Teens (13 to 18 years). Drop in, no registration needed. Full details on the library's page.

Meditation Mondays: a free program at Contra Costa County Library, Concord (2900 Salvio Street, Concord, CA 94519). When: Monday, Dec 7, 2026, 1:00 PM to 3:00 PM. The Library Wellness Team offers a guided meditation to relax and re-center the mind, body, and spirit. For: Adults, Teens (13 to 18 years). Drop in, no registration needed. Full details on the library's page.

Important: free, but you need to register online for free first. 3D Printing Studio: a free program at Contra Costa County Library, Lafayette (3491 Mt. Diablo Boulevard, Lafayette, CA 94549). When: Thursday, Nov 19, 2026, 4:30 PM to 5:30 PM. Before class, please create a free account on Tinkercad.com using the "create a personal account" option. For: All Ages, Teens (13 to 18 years), Tweens (9 to 12 years). Full details on the library's page.

Wonderful Wednesdays: Sensory Tables: a free program at Contra Costa County Library, Clayton (6125 Clayton Road, Clayton, CA 94517). When: Wednesday, Dec 2, 2026, 2:00 PM to 2:45 PM. ‘My Lileigh Pad’ presents a hands-on adventure with exciting autumn & winter themed stations designed to spark creativity, boost motor skills, and bring families closer together. For: Children (6 to 9 years), Preschoolers (3-5 years). Drop in, no registration needed. Full details on the library's page.

Important: free, but you need to register online for free first. T’ai Chi Chih®: a free program at Contra Costa County Library, Pittsburg (80 Power Avenue, Pittsburg, CA 94565). When: Friday, Dec 4, 2026, 1:00 PM to 2:00 PM. Join us for a relaxing and accessible T’ai Chi Chih® class led by certified instructors Benjamin Brisjar and Jeannette Stotts. For: Adults, Seniors, Teens (13 to 18 years), Tweens (9 to 12 years). Full details on the library's page.

Important: free, but you need to register online for free first. Diamond Art for Adults: a free program at Contra Costa County Library, Clayton (6125 Clayton Road, Clayton, CA 94517). When: Saturday, Dec 5, 2026, 10:00 AM to 11:30 AM. Take a break and make some relaxing diamond art at Clayton Library! For: Adults. Full details on the library's page.