Turbulence is just another facet of flying that has to be dealt with and often endured. One problem is getting a real idea of what other pilots are reporting in that often terms are very loose and not in accordance with definitions in the AIM.

Light defined as Turbulence that momentarily causes slight, erratic chances in altitude and or attitude If it is slight, rapid and rhythmic is can be reported as chop.

Moderate similar to light but of a greater intensity and usually causing changes in airspeed.

In both light and moderate positive control of the airplane is ALWAYS available.

Severe causes large and abrupt changes with LARGE variations of airspeed. Aircraft may be momentarily out of control

Extreme where aircraft is violently toss about and is practically impossible to control. MAY cause structural damage.

There are lots of sources out there to show you where you can expect to encounter turbulence so you can figure out IF there is a way to avoid it or at least lessen the encounter. But some days, it is just going to be butt-ugly from the ground to the upper flight levels. The nice thing is if you are not a commercial pilot, you don't have to go.

Personally I like the 'coffee' rating on turbulence.

Light is where the coffee in your cup has little ripples but you can still drink your coffee.

Moderate is where the coffee is occasionally spilling out of the cup and you have to be very flexible when trying to drink it.

Severe is when there are white caps in your cup and you are wearing more than you are drinking.

Extreme is where you can't hold the cup, coffee is all over the cockpit and the F/As, if you have them onboard, are calling you to tell you they are going to boil you in coffee after you land.