We received a over the range microwave for Christmas. We have no cabinets above the range and want to know the easiest and most quick way to install the microwave.

Thanks for you help

RTFM
If it was new, there must have been instructions...
Just take your time!

Usually, there is a wall bracket that will come with the microwave. Just make sure you hit a wall stud when putting it up. It will be more secure that way...