Board Thread:General Discussion/@comment-107.3.237.241-20141111035502/@comment-25108505-20141111233703

You invite people by right clicking who you want to invite, then hit "Invite".

As far as using the Shotgun goes, you need to keep in mind that you load each shell in seperately, so if you find you're getting low just mash the "R" key as fast as you can in order to keep the heat on the Infected. Also, since you're likely going to be running and shooting a lot, make your shots count since one close range shot is usually all you need to dispatch a majority of infected besides Tanks. But even then, the Shotgun is rather effective against Tanks so you just gotta play it smart and you'll be good. Learning the maps is a great idea, too.

I would suggest you try to invest in a good melee weapon next, like the Crowbar, or Rambo Knife. Then focus on getting the AK, SPAS, or Flamethrower, it really depends what you fancy.

Also, what's your current amount of money?