Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

path

The address of a file or folder.

A path names a location in the file system, either absolute (from the root) or relative (from the working directory).