Answer:
A piece of paper that takes most people 3 or 4 years to get.
The more you take away from it the larger it becomes. What is it?
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
I am ten little beans your look at everyday.
I travel in a gaggle.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.