The articles on the left summarise FormulaShare managed package installation and configuration, and documentation explains capabilities and considerations of each feature.
This guide covers versions 2.0 and higher of FormulaShare, which is relevant to all installations and upgrades from the AppExchange since 16 November 2020, as well as most sandboxes. For information on version 1, check the legacy guide.
If you're not sure which version you're on, you can check this by looking for FormulaShare in the Installed Packages menu item in Setup - if version number starts with a 2 then you're in the right place.
For any issues with the product or documentation, feel free to get in touch at firstname.lastname@example.org