1. Using the tool of choice open the directory (folder) for your HA configuration (where you find configuration.yaml).
2. If you do not have a custom_components directory (folder) there, you need to create it.
3. In the custom_components directory (folder) create a new folder called tide.
4. Download all the files from the custom_components/tide/ directory (folder) in this repository.
5. Place the files you downloaded in the new directory (folder) you created.
6. Restart Home Assistant
7. Choose:
   • Add tide: to your HA configuration.
   • In the HA UI go to "Configuration" -> "Integrations" click "+" and search for "tide"

Using your HA configuration directory (folder) as a starting point you should now also have this:

- platform: tide
  longitude: 7.000001
  latitude: 58.0791111