The action, or set up, on a guitar is basically the height of the strings over the fretboard. It’s a key component to the ease and playability of your guitar, and it can change over time. It’s helpful to learn about guitar action (high and low), how it can change, and which is best for your playing style. 
Play on…
Marlene

*To gain a better understanding of guitar action and it’s affects on playing listen to my newest podcast episode by clicking here!

Acoustic Steel String Guitar
Typical Action Chart
low action         medium action    high action
low E  high E    low E   high E      low E   high E
0.11″   0.08″      0.125″  0.095″    0.155″  0.125″
Luthier Information Website