I like using my monitor sideways (vertical) in portrait mode. It makes everything except watching videos better. You should give it a try and see what you think. You may find you love it as much as I do! This is my vertical monitor setup with a Macbook Air and an external monitor.
On the Mac, you can set your monitor to portrait by going to DISPLAYS and selecting Rotation: 90 degrees.
PARTIAL TRANSCRIPT
Nick Gray, nerd news, about why I like to work with a portrait monitor, not landscape mode. Here's my workstation at a standing desk. My monitor, see how it's up and tall.
Some definitions:
PORTRAIT means your monitor is up and down, like a picture portrait.
LANDSCAPE means you use your monitor sideways, like a landscape photograph.
