You will encounter too types of germination behavior in acorns. Acorns from members of the "white Oak Group" will often sprout the first fall, soon aftwer they fall and over winter as seedlings. Acorns from the "Red Oak Group" usually need to be stratified or subjected to a period of cold. These oaks germinate in the spring. In the wild they are subject to animal grazing, worms etc. These acorns are often acrid or bitter (tanic acid) to discourage wildlife grazing, but they serve an important function as a survival food for late winter when other more palatable food sources have been used up. (Isn't the intricate system woven by God to make all things work, wonderful.) To get these to germinate, they will need to be stratified or subjected to cold temps for the winter then sown.
As mentioned above, both types should be sown shallow and in mineral type soil. They can be cover lightly with peatmoss or forest floor duff. For the red oak acorns, I would would give them 3 months of cold treatment in the back of the fridge and sow them in a deep pot in late february. Keep moist and watch out.
When collecting acorns, be careful they don't heat up like compost. This will happen with as little as a bushel basket full. They also get wormed easily when stored in large quantities.