When you buy a course or sign in to your account: your name, your email address, your default language and country, the courses you have enrolled in, the lessons you have completed, and the orders you have placed.
When you make a payment: your card or wallet details are handled by our payment processor (Stripe). We never see, store, or have access to your full card number. We retain a transaction reference and the amount paid so we can issue refunds and produce receipts.
When you visit the site: a small set of analytics signals so we can see which pages people read and which courses they prefer. Aggregated, never tied to a real name unless you have signed in.
We do not collect special-category data (health, biometrics, political opinions, religion, etc.) and we do not knowingly process the data of children under 16.