DC Studio/Shutterstock Whether you have a humble workstation or an expensive gaming rig, getting a second monitor is one of the cheapest and easiest ways to upgrade your setup . Having twice the monitors doesn't automatically mean you'll be twice as productive, but a separate full-sized screen to work with does present an entirely new set of possibilities. This doesn't mean that more monitors are always better, though, and even a three-monitor setup isn't worth it for most people . Asking someone what they use their secondary monitor for can yield many answers. If you're a programmer, you can display the output of your code on the extra monitor. If you're working with a team, you can have a meeting open on the side and use the primary monitor for a presentation. You can even have YouTube or a podcast playing on the spare screen while you work or play a game on your main monitor. Still, these are just some of the simplest things you can do — there are so many more clever uses for your PC's secondary monitor.…