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Whether you're looking to pick up a new skill for your job, a certification for your résumé, or a degree to advance your education, taking an online course is a great place to start. EdX offers accessible courses and certifications from the best companies and universities. Plus, with a good EdX coupon, you can score a good deal.

Founded by Harvard and MIT in 2012, EdX is one of our favorite online learning platforms we've tested. You can browse through a wide collection of courses, degree programs, and certifications on the site, from writing to leadership to AI and data analytics. With options at every level, anyone can find something for their interests.

Read our EdX overview to learn more about the platform.

EdX has a lot of free and affordable offerings on their site, but using one of their coupons is the best way to save, with some codes helping you save up to 30% on a new course. While you're browsing through the offerings, check out the best EdX promo codes we've tested below to score an extra discount.

*This offer ends on March 26

As of the time of writing, EdX is not running any ongoing sales, so your best bet is to take advantage of their coupons and promo codes.