The new courses cover cybersecurity and SQL, and both offer a free certificate of completion.

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

Looking for the best course to learn data structures and algorithms? I’ve compiled the best DSA courses to become a better coder or prepare for interviews.

I’ve written guides on sewing and embroidery, and quilting is where both skills meet. You piece fabric together the way you would for any sewing project, then stitch through three layers, top, batting, and backing, to hold it all together. Done well, it turns leftover fabric and a bit of patience into a beautiful blanket that lasts. I looked at courses that teach quilting as a repeatable process rather than a one-off project: how to cut accurately, piece a block so your seams line up, and fini