I have collected acorns also. They are stratifying in my cold cellar
until spring. I havent grown oaks yet but how hard can they be. They
live all around me so obviously the climate suits them.

I figure it will be a few years before there is sufficient tree to
begin and pruning or wiring. Just enjoy the seedlings growing until
then. If you have a patch of ground I would plant them there as they
will do better than in a pot. Make a tree nursery and then harvest from
that spot when they are big enough to begin wiring and pruning. Follow
instructions as you would any wild collected tree.