Of course you will need a microphone to use the voice operations but it is easy to setup and use.
Once you have used the invite code above you can use this link as a bookmark to take you directly to the chat: https://discordapp.com/channels/314146631874510849/314146631874510849
We are just starting out with this so please be patient. Jim (Armorama) will either need to do this manually or another moderator can move you to Member group status. It gives you a few additioanl perks that everyone else who is using the service does not have.