I am going to be having my daughter in January and I was wondering...?

since we have central heat and air, and I notice that I wake up all stuffy and full of boogers (sorry), what can I do to avoid her from feeling this way. I was thinking that a humidifier would work, but there are SO many to choose from... do I want a cool mist or a warm mist? Do I need the Vicks Medicine?? Please help make my daughter as comfortable as possible!!!! THANKS!