how to swap between running apps

[Android Central Question]

My wife swapped from a Windows phone, which makes swapping between running apps super easy.
Now we're trying to figure out how to do it on her android phone.
Is this even possible on android? If so, then how?

 

[B. Diddy]

Welcome to Android Central! Tap the Recent Apps button (the nav button at the bottom that looks like a square or two overlapping rectangles). You'll see your recently opened apps -- tap the one you want to switch to.