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Lesson 1 of 3

Files, folders and backups

A filename helps identify a file; an extension often indicates its format. Organize files by purpose and use meaningful names with dates or versions when appropriate. Renaming an extension does not convert the file contents.

A backup is a separate recoverable copy. Test restoration of an unimportant file so you know the process works. Syncing can also sync accidental deletion, so sync alone is not always a sufficient backup.

QuestionExampleExplain

Worked example

Name a project repair-notes-2026-10-12.pdf rather than final-final-new.pdf.

Try it yourself

Create a folder plan for three projects and describe how each would be backed up.

Check your understanding

Does changing .jpg to .pdf convert an image into a PDF?

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