Make sure you ask tons of questions during orientation! No question is a stupid question! Even if you asked before & need clarification, ask again.
Try to get your hands on everything you can while you're with someone. Ask if you can watch procedures being done, even if they're not your patient. (also, like PP said, know where to find your facility's policies & procedures)
If you need to, carry a pocket sized notebook with you & write things down, so you can refer to it later when you're on your own. That way if you forget where to document something or where they put the incident report sheets or who to call when this or that happens, you won't freak out!
Hopefully you're coworkers will be super helpful & supportive, it makes a big difference! Some of my friends got jobs in LTC after graduation & only had a few days orientation and were scared to death but are doing awesome now only a few months later. So it can be done! Just take one day at a time!
Good luck!!! *hugs*