Listmania!
Basic Paintball Equipment
By an Amazon.com customer
Spyder Sonix  Semi-Auto Paintball Marker (Matte Titanium)Spyder Sonix Semi-Auto Paintball Marker (Matte Titanium)
Buy new: $66.44
Decent gun, loads of good things said about this gun. it's extremely affordable and there's many aftermarket parts to upgrade it to be a semi-pro gun.
JT Bodyguard Neck ProtectorJT Bodyguard Neck Protector
Buy new: $5.99
One of the cheapest neck protectors in the market nowadays, it's very light, comfortable, breathable and most importantly it offers a gread deal of protection.
Pure Energy 20oz CO2 TankPure Energy 20oz CO2 Tank
Buy new: $19.98
There's lots of choices of tanks. Pure energy offers a nice quality 20 oz tank for a relatively low price. This will get you about 400-500 shots, depending on the gas usage of your gun and the speed setting.
Gen-X 2 Pod Paintball Harness with Belt + 2 Pods - BlackGen-X 2 Pod Paintball Harness with Belt + 2 Pods - Black
Buy new: $8.99
You'll need this. This wraps around your waist and carries "pods" strapped to your back; essentially canisters with paintballs for refilling your hopper/loader in the middle of the action. Yeah, sometimes and in some circumstances 200 spheres if not enough.
Extreme Rage 9v Overdrive Paintball LoaderExtreme Rage 9v Overdrive Paintball Loader
Buy new: $17.99 / Used from: $13.99
This is a cheap hopper for most paintball guns. Not necessary unless you will do occasional speedballing. Now, though, for serious speedballing get something better.