Feel better soon. I'll also second the "lots of rest & liquids" routine. Hot toddies all around. Warm compresses on the bridge of the nose and across the eyes can help relieve the sinus pressure.

Another thing I'll suggest is to keep your hands and the surfaces you come into contact with clean. A lot of people don't think about the possibility of re-infecting oneself - even though the second round may be a bit milder than the first (because your immune system still has some of the antibodies in your system). While sick, your immune system is fighting off the infection. When recovering, your immune system is also resting, and you're more susceptible to reinfection, or infection with something just as nasty.

I'm immune-suppressed (by prescription), so I'm much more cautious about germs than I used to be. I'm not one of those germophobic, disinfect everything, wash-my-hands-with-sanitizer-right-after-I-shake-hands-with-you kind of people, but I'm cautious. I wash my hands after blowing my nose, and I wash before handling food (even ice for my drinks).