/connect irc.freenode.net 8001
/join #nginx
/msg NickServ IDENTIFY <account> <password>
†/msg <person> <msg>
to start a private message
†
/msg NickServe IDENTITY Integralist <password>
or/msg nickserv SENDPASS Integralist
to change password (sends link to your email)
Commands Reference: http://www.deepspace.org/nickserv.htm#REGISTER
Freenode Help: https://freenode.net/kb/answer/registration