Honestly don't hang around the nurse's station and DON'T take up a seat at the nurse's station when there are nurses and techs that need to document on their patients.
Answer call lights regardless if they're your patient or not. Help the techs out (plus they have tons of hacks on how to efficiently care & clean up patients), because you're bound to have some "down time" as a student when your nurse is charting. Be helpful without being in the way. Gauge your nurse's want to teach. If unfortunately you've been paired with a nurse that doesn't really have the time or doesn't want to take the time to teach you, just remain calm/respectful and help her as needed. Don't take it personally, everyone has their days and sometimes adding a student can become a burden.
Now, if you get paired with a nurse that really seems to be the type to want to teach, utilize that resource but don't ask questions that could otherwise be looked up in a matter of minutes.
Patients usually love students because they kind of know that they'll be receiving extra attention. Utilize your time wisely, check in on patients regularly, ask if they could use some thing (a fresh cup of ice water goes a long way), and so on. Towards the end of the day, my instructor even had us check patient rooms to make sure they're will stocked wth S, M, L gloves, gauze, tape, that med cabinets have syringes, etc.
I think the biggest point I can get across is just be helpful. Don't waste valuable clinical time sitting at the nurse's station with other students chit chatting like there's nothing to be done.