go over to home depot,
jack their 1, 1/4 ton truck,
load it with 3/4 inch 4*8 sheets of plywood, nails,
4-5 generators,
solar lighting sidewalk kits,
4*4 and 6*6 10 ft poles
30 80lb sacks of concrete
expansion foam
4.5 inch self tapping deck screws
bolts
hinges
aluminum window screen
2 medium green houses
10 sets of 2, 45 watt solar panels
4-5 of those those yard pinwheels (metal) so you can hook up a small generator and an inverter for extra power. Plan on 2 a person to ensure a decent amount of power, and keep 5 of those in stock in case one gets ruined
hook up 4 bicycle powered generators to help with an exercise regimen
get a bunked and start doing light assisted pull ups, push ups, jumping jacks, sit ups and lunges as well as steam engines any thing to aliveate boredom and get stronger.
get a pellet gun and take 25 practice rounds a day, I have over 5000 pellets so Im not worried about running out
drop all of that off at home and have my friends start nailing stuff together and covering the wooden wall structures with the screen to hold it together
cut open the drywall and fill the walls with foam
get 95% alcohol and fill up beer bottles 1/3 the way and clean the guns
go over to the hardware store and pick up bullets for my 30.06's (M1 Garrands, 7 of them)and fill up 4 55 gallon drums with shotgun shells, 30.06 rounds, 30.30 rounds, .22 rounds and 50 5 pound sacks of gunpowder, several thousand yards of fishing line, hooks, heavy duty rope and motion sensor cameras
also pick up a few .22 handguns and pellet handguns for practice. grab as much ammo as possible of any kind of gun (after you get what you NEED, you never know what you might pick up later you know!)
drop all of that off at home and help re-enforce the windows, pour foam and bring up plywood into roof crawl space and make a platform out of 4 4*8's/seal in the insulation and continue readying the water condensers
get stores of beans and canned corn lined up and start pouring the concrete fence posts outside and putting in the posts that should already have boards nailed between them (they will be reinforced at a later date)
start getting petroleum jelly ready to lob some newspaper fire nades at the the horde and add gunpowder for an snap
I already have collected (gifts every year I get 2 250 rd boxes) several thousand .22 LR rounds and i have enough shotgun rounds I could open an 18 inch gap and force the zombies into a choke zone and blast them one by one (with a shotgun I would wait till they fill the box and use good old buckshot and take out 3-6 )
other than that keep the fire nades ready if we need to scram and start using the .22 to thin the herd, fire 50 rounds a day and make every one a one shot kill.
if you get surrounded by a bunch just keep plinking away at only the targets you are sure to get and one day you will be able to leave for more bullets and reinforcing gear supplies and gradually expand your defenses outward and use everything you can from plastic siding to tarps to help make your wall tougher to break down. you can always grow food and you can always dig a deep trench and when it gets full of zombies (7 ft trench 5 feet wide) throw out some petroleum jelly and burn them off.
oh yea, get health supplies from the Walgreens and get respirators for when you have to burn out the ditch
after you get those solar lights that are built to light for 8 hours hook 3 of those panels to a small transistor radio and you will be able to power it once your batteries die, also lengthen the wire from the panel to the light and use them to light the inside of your home.
make sure you have plenty of books (minimum of 175 a person) so you can read and learn/ keep entertained.
use one of the oil drums as a bathroom (cut it in half) and use the others as large fire bombs that you could set off to make a large hole in the horde (old Vietnam trick they used to fill them with 4 pounds of petroleum jelly, 35 gallons of jet-fuel and set them off with 60 pounds of C4, it would throw Napalm downhill and make a burning crater)
after 100 days of siege if you have been picking off your 50 a day you are probably safe to make another supply run. You should have taken out 5000, a person 5000*5-6 = 25,000-30,000 ZKIA (Zombie Killed In Action) Even in my town of Madison Wisconsin we have 200,000 + people so that puts in a dent. and it makes a good bonfire when you chuck them in the street and light them up