Files, extensions and folders
Naming and organising work logically.
File — a named collection of data, identified by a name and an EXTENSION.
File extension — the letters after the dot. It tells the operating system the file TYPE and which application opens it:
- .docx (Word), .xlsx (Excel), .pdf, .csv, .txt.
- .jpg, .png, .gif, .svg (images); .mp3, .wav (audio); .mp4 (video).
- .html (web), .zip (compressed).
Folders / directories organise related files and can be NESTED into a hierarchy (general → specific).
File path — the location in the hierarchy (Weddings/2026/Smith/photo.jpg).
Good naming conventions:
- Meaningful, consistent names.
- Dates in YYYY-MM-DD so files sort chronologically.
- No spaces (use - or _); avoid special characters.
- Pad sequence numbers (001, 002) so they sort correctly.
- Use versioning (_v1, _v2, _FINAL).
Good structure + naming = fast retrieval, fewer mistakes, and a system that scales.