How to find your IP Address on an Apple Mac.
From the desktop click on the Apple logo at the top left
And then choose System preferences
When the System Preferences page appears click on the network icon
On the left you will see your active connections, with a green light next to it
And on the right hand side will be your IP address
In this instance it is 192.168.1.159
When you have taken a note of it you can close the System Preferences page.