Wow, you definitely are new. Congrats on becoming a nurse and your new job.
My biggest piece of advice would be to ASK, ASK, ASK. No question is too stupid to ask. If you are unsure in the least, get some more info. Be open to using absolutely everyone as a resource---you can learn from a CNA just like your DON.
Something that worked for me was making a "cheat sheet" of sorts. Use a small notebook, binder, clipboard, whatever you like. Jot down anything you think might be important later--how to call Dr. X., how to do "G" kind of dressing change, where to find more of this supply, how to get hold of maintenance. Then after you have all this scrawled, unorganized info, you can straighten it out to suit you better. Maybe you can take and sort the info by category so you will have an easily organized super resource book.
Make sure to get an updated phone list--work numbers, MD's offices/call numbers, pharmacies, etc.
The last thing would be to get a good work bag. Then you can keep all you work "stuff" together. Put your supplies (stethoscope, scissors, light, etc), pens and pencils, drug book (if you use one), phone charger, coin purse, snacks (nonperishable like granola bars, nuts, oatmeal) and water/other drinks, "emergency bag" (I use a makeup bag) with Chapstick, feminine products, meds for you (Tylenol, Advil, Tums, etc.), glasses/case/contact stuff, hand sanitizer/lotion. I keep my dedicated work bag in my truck when I'm working and restock things when I have some time off.
Don't know if any of this will be helpful. If it's not what you're looking for, I'm sorry. If you give me some more direction, I will definitely try to help!