Upgrade your brain without school loans by taking advantage of free learning opportunities. The latest research finds that lifelong learning helps keep your brain young. Find your free classroom:

• Attend online. Check your public library website, which may offer language learning, tutorials, and digital textbooks. Massive Open Online Courses (MOOCs) like Coursera and edX offer a huge variety of free college classes year-round.

• Study downtown. Organizations like county extension offices, nature centers, and community centers host an array of classes and seminars. Expand your mind at a local history lecture or take a 4-week home canning course.

• Join the club. Find a group with the skill you’d like to learn and sign up. Apprentice with experts in anything from beekeeping to woodworking. Those who practice traditional skills such as quilting and basket weaving are always eager to pass on their knowledge and keep the arts alive.

Browse the possibilities and see what new interest will rejuvenate your brain.