How to download blender manual? How to download blender manual link on the website is dead, is it mandatory to download the repository and build the manual to have it off line?

there is no link to download the ZIP file ever, can any one enlight me about this matter plz.
This is the 2.79 manual.  You can download it from here.

This is the 2.80 manual. It is a work-in-progress.

In general, you can use your favorite search engine to search for "blender 2.79 manual" replacing 2.79 with the version you are looking for.  This will usually lead to a link for that version.