Clue less about Fraternity rush

[BGreekquestion]

Hi everyone, I was looking to get as much information as I could about joining a fraternity and I dont really know anything about rush, especially as as an out of state student. I'm 20 right now and am at a community college, but I should be finishes here at the end of this semester. My top schools are the University of South Carolina, Alabama, and Georgia.

I have heard that greek life at southern schools (I'm from the midwest) is a lot different than other areas of the country. I don't really know what Fraternities look for in new members, I'm 20 also a little worried that because I'll be 21 by the I get on campus that will be a problem. I'll only be a sophomore though, and I am hoping to be there during the summer semester too if that matters
Any advice or comments would be very helpful thank you.. hope I posted this in the right spot.