Codecademy (free tier) — interactive introductory coding lessons

Codecademy’s free tier provides interactive lessons in programming fundamentals (HTML/CSS, JavaScript, Python and more) so beginners can learn through hands‑on exercises without paying; a paid Pro tier adds projects, assessments and certificates. The free content is open to anyone who signs up for a basic account and is suitable for people starting out in coding or brushing up existing skills. Access is via the Codecademy website where you create a free account, choose a course path and follow the guided, browser‑based exercises.