i am me said:
so theres this girl who works at my schools gym (folding towels and ****) who i see whenever i work out in the morning. how should i start a conversation with her?
Give us some specifics...has she flirted with you? Has she noticed you? If so what happened? Did she smile at you or give you a blank stare?
Assuming you don't look like a complete bum at the gym (always groom yourself, just in case you see a fine woman somewhere), see what her body language is like. If she is open to talking (isn't too busy, doesn't have a mean expression on her face, etc), walk up and say "Hello" and make small talk...like "How do you like working here?" or "What do you do when you're not at the gym?" ("How" and "Why" questions are key. Questions that lead to one word answers will kill the convo.) That can easily transition into what she does for fun. Then at the end of your conversation (which shouldn't last more than 3 - 4 minutes), tell her that she seems like a cool person and that you wouldn't mind hanging out with her one day. If she responds positively, leave her your number...hopefully you have a business card of some sort. (or at least exchange numbers). Then say, "It was nice meeting you...talk to you soon." And get back to your workout.
Hopefully you know what to do from here. Piece of cake. Good luck.