The Miller Learning Center has 96 group study rooms. These are available on a first-come-first-served basis, and groups of two or more have precedence over a single person. There are also plenty of carrels, tables, and computer spaces. You'll find rolling whiteboards from the 2nd floor up.
The 4th floor is the quiet floor where you'll want to whisper. There is also a super-quiet Reading Room on the 3rd floor, east wing near the TechLending desk. Normal conversation volume should be fine everywhere else in the building, but be respectful of special events, and special time (midterms and finals).
There is a Jittery Joe's coffee shop on the 2nd floor, and it can get a little loud and social in that area. The MLC is also right across from the Tate food courts. You can have food and drink in the MLC. Just be sure to report any spills. The MLC is on 24/5 schedule most of the semester, but keep an eye out for changes to our HOURS around holidays and breaks!