What bugs me a lot about the Greek-negative people is that they make these value judgements about sorority members...without ever knowing one. So for you, I am giving the reverse advice to what I'd give someone asking for recruitment help on the other side
1) Observe the sorority members. What are they involved in ? Who is wearing what letters in what club? If you really like that girl in English who has intelligent arguments, that's a good reflection of her membership. If there are a bunch of XYZ's in Adventure club and you enjoy hanging out with them, then that's a reflection of their sorority as well. We always tell sorority women to be seen doing things in letters that reflect well on their sorority (IE answering questions in class, helping out around campus, involvement in clubs), so this is your chance to get a little background information on what ELSE these women do aside from their sorority membership...and trust me, few women have "sorority" as their only campus involvement.
2) If you know what chapters are on your campus, visit their national website. See what they offer OUTSIDE of your campus. (PS, some even offer travel help to sisters, as well as scholarships !)
3) While it's great that someone close to you was Greek, Greek life is SO different from campus to campus. Otterbein doesn't do rush like Ole Miss or even Ohio State, so while the general advice is the same (be pleasant, open minded, gracious), the particulars and personalities are something only you can judge.
4) i am a junior and going abroad to Northern Ireland in 4 (!!!) days. I've never lived in the sorority house (it only sleeps 5 and they're exec positions), but while I'm gone, it's going to be great to have people to send letters to and to get mail from. I'm going to miss the crap out of those girls, but when I come back, I'll get to catch up on all the great stuff, and see how my family tree has grown!.
5) Keep in mind sorority life isn't all warm fuzzies all the time. Like any relationship, there are the trials and fights and tensions. You may not be BFF with every girl, and that's OK!! Just because you wear the same letters doesn't mean you have TO BE THE SAME. No matter where you go, your unique talents will contribute to the sorority.
To echo what everyone else said...go through rush. Honestly, what do you have to lose? If it isn't for you, no love lost. If you find out that you love it, then you'll have a great time as a new member.