The top eight seeds are Clemson (47-14), Rice (50-10), Texas (40-19), Alabama (41-19), Cal St. Fullerton (43-13), Nebraska (42-15), Georgia (41-19) and Georgia Tech (45-16).
The teams are grouped into 16 4-team groups. Each group plays a double-elimination tournament to pick a winner. Those 16 winners are then paired up in "super-regionals" where eight sets of two teams play another double elimination tournament. The winners of those eight tournaments move on to Omaha for the College World Series, which will start June 16, around the time the NBA Finals will be at Game 2 I think.
There are five first-time participants in Lehigh, UNC Asheville, Prairie View, USF, and Sacred Heart. The latter is in Fairfield, Connecticut if you were wondering. Princeton made the tournament with a 19-24-1 record.
The best place to check for previews of this tournament will be at Baseball Analysts where Rich and Bryan probably can fill out a bracket sheet for this tournament. Their preview hasn't been written yet mainly because there is a limit as to how fast someone can write. But check there for the best info.
I'll post periodic updates during the tournament, which starts June 2.