Harvard University offers free online courses for programmers

How to engage with a vibrant community of like-minded learners. How to develop and present a final programming project. The entry-level course is taught by David J. Malan and the computer science learners get to learn the following programming languages through this course - C, PHP, and JavaScript plus SQL, CSS, and HTML. What makes this course more interesting is that the problem sets included in the course curriculum are inspired by real-world domains of biology, cryptography, finance, forensics, and gaming. Mentioned below are important details of the course.