1. keep a similar sleep schedule with her as best you can (I lost a chance to go to Lake Winnipesoka because I never slept at night)
2. Wait at least a year to put a rock of any sort on her hand. I don't care if it is a right hand ring, wait.
3. If you like her, tell her. Don't stand at the sidelines and wait for her to drop in your lap. It won't happen. Honesty and action will win the day long before evasion and inhibition will chase her away.
4. If she says no, don't cut her off as a friend. I have several girls that I asked out that I am still great friends with and have learned much from knowing them, both practical and spiritual knowledge.
5. Ok, you got the girl, but there isn't a wedding ring on her hand. Now treat her to what she wants. Make her feel like she is the most important woman in the world, but do not smother her. Give her room to breath (I am sure they need it).
6. I didn't learn this first hand, but through my brother. Yes, I know you have that longing. But seriously man, if she doesn't respect you or you don't respect yourself enough to wait, back away from the relationship and reorganize your priorities. You don't want a 9 month long wait for a problem that has two legs, two arms, eyes, and looks vaguely like an alien (yes, babies look like aliens for the first few weeks). And no, Condoms, and other contraceptive methods are NOT 100% reliable. Condoms break. Your body can build up an immunity or simply filter out the pill from your blood. IUD's are also not fully effective either. You don't want the social stigma that surrounds that. Finally, statistics have shown that married couples enjoy intercourse more (no, it isn't like Married with Children Mr Borlen.) than those outside the marriage bond. Same goes if she says no. Respect yourself and her and wait for sex. Besides, you will have, hopefully, till death do you part to enjoy that part of life. What's the big hurry?
7. Tying into the last sentence, respect is the most important part of a relationship. If you can't respect her, or she can't respect you, then what is the purpose of the relationship? Men, be nice and open the door for them girls. Girls, just let us have those bits of chivalry. It isn't saying you are incapable of opening a door, it is us saying that you are important enough to us that we would that you would allow us to open the door for you. Men, pay attention to the eyes and face when you are talking, I am certain your girl is tired of guys always staring south when she is talking (besides, for ASL, half the meaning is lost if you don't get facial expression).
Well, that is it for me. I have no advice for beyond bf/gf relationships, but that is my rant in a nutshell.