Grav - Linking to other pages on the same Grav

Quick question to keep up productivity while learning: If you create a Grav landing page that links to other sections of your Grav website, how do you easily link to other pages on the site?

For example, if you have a Vehicles website, and you have a landing page like this:

  • Planes - link
  • Trains - link
  • Automobiles - link

And then you have 3 pages:

Planes
Trains
Automobiles

How can you quickly find / copy / paste the URL to the pages into the Landing page?