Files vs folders
Files store content. Folders organize related files. Both matter because coding projects are made of many small parts.
Public article
Files, Folders, and File Extensions for Beginners
A simple guide to understanding project files, folders, and extensions when you are new to coding.
Why extensions matter
Extensions like .html and .py quickly tell you which language or file type you are opening.
How beginners can practice
Open a simple project and identify the purpose of each top-level folder and extension you see.