: Is it related to the "101" brand (like the 1017 Records or 101 Apparel)?

Downloading .rar files from unknown sources can be risky. If you are looking for a specific creator's work, it is always best to use their official Gumroad, Patreon, or GitHub pages to ensure the files are secure and authentic.

Please provide so I can point you toward the right download source.

: Is it a "Course 101" starter pack or a collection of 101 books/PDFs?

: Is it a bundle of 101 plugins, brushes (like for Photoshop), or game assets?