Minetest How to create a game
(Read time is about 1 minutes)
So you've started the game... Now lets hit New...
Ok, fill in the world name and hit Create...
Now that we are back at the main screen... Hit Play Game...
Now you should be in a new world you just created.
Keep in mind you can when at the main menu also check creative mode, deselect damage, and even host your own server.
If you have the host server checked... you can then invite freinds and family to your game...
Give them either your machines name or your IP. (If you need help just use Google to search, "How do I find my IP address in Windows 10" or perhaps "How do I find my IP address in Linux")