Commands always start with '.' or '/'.
.quit = to leave
.msg <nick> <text> = to send a message
.help = for this help page
.who [<channel>] = to see the who list [of <channel>]
.whois <nick> = to get information about user <nick>
.me <action> = to emote
.list = for the channel list
.join <channel> = for joining/creating a channel
.users = for a list of users on the server