Learn from the best free and paid TypeScript online courses, the programming language created by Microsoft to aid the development of large-scale JavaScript applications.

In this analysis, Udemy and Coursera go head-to-head: revenue, growth, losses — here are all the numbers.

Here is a guide with the best free online courses to learn Haskell for both beginners and experienced programmers.

In Q4 2025, Duolingo announced it would let go of $50M in bookings to reach 100 million daily active users (DAUs) by 2028; a strategy Class Central covered in detail last month.  2026 is its “investment year,” and Q1 was the first quarter of execution. So far, the plan seems to be working. The Expected Results: Low Bookings, High DAUs Duolingo is running multiple tests to improve the free experience: spoken tokens for speaking practice, Speaking Adventures for real-world conversations, and fla