The basic rule: Utensils are placed in the order of use- that is from the outside in. A second rule: Forks go to the left of the plate, knives and spoons to the right.
A typical informal place setting includes thes utensils and dishes:
Dinner plate: The first thing to be set on the table
Two forks: Placed to the left of the plate. Dinner fork (larger of the two)