@raynbow- When I was in college, my best friend had rhinoplasty and I helped her though the weeks of healing that followed her procedure. She also had to wear a nasal splint, and had some discomfort from her nose being stuffy due to the surgery.
One thing that your doctor will advise you to do is to not bother your nose right after surgery. Though this may seem like it will be hard to do, if you don't leave it alone during the first few days of healing, you could risk changing your results. No matter how much you want to rub or blow it, you simply will have to ignore these urges.
After a few days, you may be prescribed a nasal spray by your doctor to help you with your stuffy nose. This will depend on how extensive your surgery is and when your doctor determines that it will be safe for your to use one.
During this time, your doctor may also show you how to gently clean your healing nose with cotton swabs. This will allow you to remove dried blood so you will be able to breath better.
Another good tip to follow while wearing a nasal splint following nose surgery is to sleep with your head elevated. This will be very beneficial in helping you to breath as you heal.