Spring Admits

Hey guys, I was accepted off the waitlist and offered Spring admission for 2018, I’ve already paid my deposit. There is barely any info on how Spring admission works and I have some questions if anybody knows the answer to these:

-How does housing work? Am I able to pick roommates or do I get randomly assigned a room?
-When do Spring admits enroll in classes?
-When do we get a UM email?
-When do we take the ALEKS??

Thanks