Harvard Online
CS50's Introduction to Programming with Python
Harvard's dedicated Python course: functions to unit tests, regex and object-oriented programming.
Free certificateProgramming
60 hrsBeginner
173 free courses
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University of Helsinki
Full Stack Open: Deep Dive Into Modern Web Development
University of Helsinki's in-depth course on React, Node.js, testing, GraphQL and TypeScript.
Free certificateWeb Development300 hrsIntermediateHubSpot Academy
Email Marketing Certification
HubSpot's free email marketing certification: strategy, segmentation, deliverability, personalisation, design, copy and testing.
Free certificateBusiness & Marketing4 hrsBeginnerCisco Networking Academy
Ethical Hacker
A free, hands-on Cisco course on penetration testing, from scoping an engagement to exploitation and reporting.
Free certificateCyber Security70 hrsIntermediateIIT Kharagpur's 12-week NPTEL course on probability theory and statistical inference.
Paid certificateMathematicsSelf-pacedIntermediateKhan Academy
Statistics and Probability
Khan Academy's full free statistics course, from describing data to significance tests.
No certificateData Science60 hrsBeginnerMIT OpenCourseWare
Introduction to Probability and Statistics (18.05)
MIT undergraduate course on probability, Bayesian inference and frequentist statistics.
No certificateMathematicsSelf-pacedIntermediate