How do I split my screen on Zoom/computer/iPad?

When you want to see two things at the same time, using a split screen on your device is a great solution.

If you only want to see one thing, use Command (⌘) + Tab to switch between open applications and ⌘ + ~ to switch between open windows of the same application.

In Zoom

When participating in a Zoom video conference, you can select the Side-by-side view when content is being shared. This will place the shared window to the left and the participants to the right with an adjustable sizing bar between them.

Multiple Applications on a Computer

You can resize windows in a number of ways.

Catalina

OS 10.15 or later, you can tile your window the right or left half of the screen by hovering over the green full-screen button to reveal more options.

Prior to Catalina (and more features)

There are several apps that provide more options for snapping windows. Both Magnet and Better Snap Tool offer control over automatic snap locations and sizes of windows. For example, this can be used to create a 1/4 screen ribbon for your Zoom window while keeping 3/4 of your screen for your browser.

This example movie shows a window being automatically resized in various locations by dragging it either to the sides of the screen or to customized snap zones using Better Snap Tool.

iPad

On iOS 11 (but 13 adds more), iPads can multitask allowing for a side-by-side split or a slide over window. These are well documented and explained in this apple help article.