Drupal 8 User Guide: 11.3. Downloading and Installing a Module from Drupal.org (Updated 2019-08-30)

Goal: Download and install the contributed Admin Toolbar module, which allows you to easily browse through the administration section of the website.

See the written version of this tutorial for links to prerequisites and related tutorials.

[SaifUrRehman-ui]

How can I upload the module in Zip format?

[oliver_siegel]

1:49 is the "+ Install a new module" button supposed to be there on a clean, out-of-box standard install? Cuz for me it's missing...