Step 1: What to Wear While Playing.
Step 2: What Gun Should You Get
Shotguns:Not one of the most popular guns on the market but if you are looking for a reliable big clipped guns heres a good choice.
Automatic Electric Gun(AEG)These are one of the most popular guns on the market with the sniper.These guns are well rounded except for the unreliabilty of some of the makers such as clones but if your on a low budget you should probaly get an echo 1 they are extremely good guns for their price.These guns have very high rates of fire which give you a better chance of hitting your man if you miss the first time.
Sniper:These are very good guns for shooting someone from a distance and bring in the element of fear to your advantage but it has a major drawback if you are are caught with smg gunners and machine gunners you have to cock your gun every shot or run to cover while carrying a huge gun.
Handguns:The handgun is a must have, preferably a gas but a spring will esentialy get the job done.You need a seconary because, say you run out of ammo and dont have a spare clip or your gun jams you could easily pull your sidearm and get your shot off much quicker than reloading.
So this is most of the categories except custom guns and thats alot different.
Step 3: Where to Play.
Step 4: Game Modes
2.)Bite The Bullet:There are really no rules, it is just keep playing until someone can't stand the pain this could go on for a while or very quickly.
3.)Capture The Flag (C.T.F.) : There are two flags on the playing field, one at your base, the other at your opponents. The objective is to capture (steal) your enemys flag and take it to your base without being shot. There are defenders and attackers, attackers being quick with short fast firing guns, and defenders with heavy sray and prey guns with massive mags.
4.) There are many more but it would take too long to describe them all, just use your brain.
Step 5: BB's
Light BB's break your gun... Just dont buy them they are poorly made and lose their accuracy in about 15 yards where as heavy BB's dont lose their accuracy for... depends on gun and hop-up.
Article on good and bad BB's Here
Step 6: The End
Now go outside with your buddies and have some fun airsofting, but be safe also!