How to install a fresh copy of Mojave on a Macbook Air? When I do the Option + Command + R, I am presented with several options.  One of those options is to reinstall Mojave from an already existing image.  I don't want to use that image, rather, I want to install from a new image.  

For some reason I cannot log in to the laptop.  Is there a way to load an image onto a USB drive, pop it into the USB port, and install from it using the Option + Command + R method?
After booting into Internet Recovery with the following key combination at startup:

Option+Command+R

...navigate to 'Disk Utility' and erase the disk


After erasing the disk you may then proceed to install macOS using the 'Reinstall macOS' option.