Unlock the full potential of ChatGPT and prompt engineering with these top-rated courses.

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

This year, Duolingo announced a major strategic shift: from monetization to user growth, with a target of 100 million daily active users by the end of 2028. To get there, it needs to grow about 25% year over year, every quarter. In Q2 2026, daily users grew 23%, to 58.7 million, the first time growth has sped up in two years. Duolingo also disclosed a roughly $10 million bonus that pays out if Q4 growth hits 25% or more. Paid subscribers grew by about 200,000 in the quarter, the fewest since 2

“We’re all puppets. I’m just a puppet who can see the strings.” – Dr. Manhattan, Watchmen Alan Moore is a legend. I’ve always been a big fan of his work adapted to movies: Watchmen (even bought the illustrated hard-cover comic series book after watching the movie) and V for Vendetta, being the most prominent. When I found out about this course on BBC Maestro, I didn’t hesitate to start watching it. Through this course, Moore helps us see the ‘strings’ of storytelling – the underlying mechanism