Learn ethical hacking, vulnerability assessment, and pen testing with Nmap, Nessus, and OpenVAS. Plus, master pentest reports and security audits with top courses.

An overview of CS50P, Harvard’s Introduction to Python, and your path to a free certificate .

Every Black Friday, Class Central compiles the best online learning deals from online course platforms. But you don’t need to wait for Black Friday. You can find interesting deals all year long! In this article, we’ve compiled the best online learning deals and discounts available right now (or that will soon go live). When deals have an end date, we included it too, but note that it’s not rare for deals to remain active even past their end date, so you might want to give them a try nonetheles

Are you new to programming or do you know a beginner programmer? Have you looked at pages of code and thought it’s just too hard to even try to learn programming? There is an easy way: welcome to the world of Scratch! Created in 2007 by the Lifelong Kindergarten Group at MIT, Scratch was designed as an easy, fun introduction to programming for children. But you don’t need to be a child to appreciate Scratch. In CS50’s Introduction to Programming with Scratch, I enjoyed personalizing the cartoon

Explore the wonders of biodiversity, interspecies relationships, and conservation in a variety of ecosystems with the best ecology courses.

In 2025, Harvard CS50 offers 10 free certificate courses on topics such as computer science, Python, and AI.