Harvard's introductory computer science course materials, available online.
CS50 provides lectures, notes and problem sets for learning programming and computer science fundamentals. Course materials are published on the CS50 website for self-paced study.
The course materials are available online for free; certificates or other options may differ.
The introductory course is designed for beginners.
Information and links are accurate as of the time of writing and may change. Always verify on the official site. This is an independent guide, not affiliated with the listed services.