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Harvard University (CS50)
What you'll need
A free, self-paced online introduction to computer science from Harvard University, open to anyone and described as best suited for learners ages 12 and up. Students work through eleven weeks of material, problem sets and a final project on their own schedule. Those who score at least 70 percent on every problem set and the final project earn a free CS50 Certificate. Work for the current term is due by June 30, 2027.
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