This guide will teach you how to identify the hardware that runs your computer.
Left Click on the Apple Logo in the upper left-hand corner of your screen.
Click on the "About this Mac" option.
From here you are able to see the key details about your Mac Computer.
The Important things to look for have red Arrows pointing to them.
1. OSX version number - example: macOS Mojave version 10.14.6
2. Processor
3. Memory (RAM)
4. Graphics
To find out if your computer will run eXp World you can cross reference this information with the eXp World Hardware Requirements found here