1. Read the Zombie Survival Guide.
2. Remember the rules of Zombieland.
3. Play Left 4 Dead 2 to get some ideas for what random objects work well against zombies.
4. Assuming I survive the initial infection, I would find a group of other survivors, raid the nearest gun store (assuming it's been abandoned), and grab as many weapons and as much ammo as we can possibly carry.
5. After stocking up on weapons and ammo, we would find the nearest grocery store to see what food we can salvage. And we can't forget the Twinkies!
6. If there are any geniuses, scientists, or doctors in the group (which would be GOOD to have), they would start working on a cure for the virus by doing blood tests on some of the zombies we've killed. Hey, if you want to save humanity, you gotta start somewhere.
7. Make sure said "zombie virus vaccine" can be absorbed through the lungs, assuming it's been tested already, and spray the entirety of the infected area with a crop duster.
That's my plan for how to survive the zombie apocalypse and save humanity in the process. Now I'm in the mood for a Twinkie!