Cereal first of course.
Other way round makes no sense.

Some cereals just don't produce satisfying cereal-milk. And after filling up on cereal, the last thing I want to do is ingest a bunch of gross warm sugary cereal-milk.

Milk? I can't remember the last time I had it with cereal. I always like my cereal dry.

Depends on the cereal.... if it's a kids cereal with sugar or chocolate coating, then I'll sometimes have dry cereal as a snack later at night, or I think I could tolerate plain cornflakes too. If you eat muesli/weatabix/bran dry though then I would give you a strange look too.

Personally I have a large bowl of cereal almost every morning, and generally don't have anything else for breakfast... I put the cereal in first like a normal, then pour milk. Depending on the cereal I can usually regulate as I am eating to avoid there being lots of leftover milk, or too much cereal with little milk, but if I can't I will just spoon the rest of the milk up anyway.

On the rare occassions I have decided to have more cereal after, I will have spooned all but the dregs of milk out the bowl before adding more cereal, then more milk first.