Nikon has made its entire curriculum of online photography classes free until the end of May. The classes were originally made free throughout April, but Nikon has now extended access for another month.

All 10 classes available at the Nikon School can be streamed for free. The classes are normally priced anywhere between $15 and $50 each.

Each class is taught by a professional photographer and provides in-depth lessons to help you get better at taking photos. Some courses cover Nikon-specific products, but many of them teach the fundamentals of photography, such as a course that teaches you how to photograph your children or pets or the basics of making a music video. So even if you don’t own a Nikon camera, many of these classes might still be worth a watch.

If you’re interested in streaming the courses, you can do so by going to Nikon’s official website. You will need to sign up by entering your name and email address before you can view the classes, but you can opt out of receiving marketing emails.

Update May 7th, 1:54PM ET: This story has been updated to mention Nikon extending its free online courses through the end of May.