Oak leaves are wonderful, but decompose a little slower than other leaves, compost made just from leaves is called leaf mold.
Just put your leaves in a trash bag, make sure they are moist, tie up the bag and pole a few holes in it. Make sure and leave it in the sun.
Not usually available commercially, it is a great soil additive, but does not contain much nitrogen (heavy on the carbon).
If you make a pile composed of layers of leaves, grass clippings and kitchen waste peelings etc. you would have a pretty good compost with more beneficial stuff for the soil.
One thing that I worry about with grass clippings is the fert/weed killer that my husband puts on twice a year. So, we don’t use any of our grass clippings for our composer.
I’m going to spread a tarp under our big maple to catch the leaves and then just drag it on over to the garden and throw most of it in, till it in, and the rest goes into the composer. But the trash bag thing works great. I’ve done that in the past and it’s amazing how you start with this big stuffed bag of leaves and a few months later it’s composted down to such a small amount. I love leaf mold.