When looking for acorns, stear clear of any discolorations, holes, or cracks. Try to find rich brown ones.
Once you have collected them, you have to husk them. This is very simple. Just crack the outer shell with a rock and pick out the white innards.
Watch out for any discoloration; this indicates maggots and other nasty parasites.
Now that you are done husking, you may think that they are ready to eat, but you have one final step. You must let the acorns sit in water until the water changes color. Then you dump this water and replace it with new water. You repeat this process until the water does not turn a different color. This will take one or two days and will cure the acorns of any tannic acid . Then they are ready to eat.