This download is completely free and won't cost you a penny. Then, launch the game through the desktop shortcut.
Double click inside the Slime Rancher v1.4.3 folder and run the setup application.Ogdens Retreat, The Wilds, Mochis Manor, and Nimble Valley do not have their own map and The Ranch is already filled in on the map, so none of these locations have a node to find. Each one will unlock their respective zone on the World Map, giving it more detail, and by extension make navigating that zone much easier.
zip file and click on “Extract to Slime Rancher v1.4.3.zip” (To do this you will need 7-Zip, which you can get here, or you can use the built in windows extractor). This page lists all five Map Data Nodes in the game.