Harvard Online
CS50x: Introduction to Computer Science
Harvard's famous intro to computer science, from Scratch and C to Python, SQL and the web.
Free certificateProgramming
120 hrsBeginner
173 free courses
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Harvard Online
CS50's Introduction to Databases with SQL
Harvard's course on querying, designing and scaling relational databases with SQL.
Free certificateData Science50 hrsBeginnerKaggle Learn
Intro to SQL
Kaggle's quick introduction to SQL queries using Google BigQuery public datasets.
Free certificateData Science3 hrsBeginnerfreeCodeCamp
Relational Databases Certification
freeCodeCamp's rebuilt certification on Bash, SQL, PostgreSQL and Git, with a free exam.
Free certificateData Science300 hrsBeginnerKaggle Learn
Advanced SQL
Kaggle's follow-on SQL course: unions, analytic functions, nested data and efficient queries.
Free certificateData Science4 hrsIntermediateHarvard Online
CS50's Web Programming with Python and JavaScript
Harvard's follow-on to CS50x: build and deploy web apps with Django, JavaScript and SQL.
Free certificateWeb Development120 hrsIntermediate