NickServ allows you to register a nickname and prevent others from using it. The following commands allow for registration and maintenance of nicknames; to use them, type /msg NickServ command. For more information on a specific command, type /msg NickServ HELP command.
REGISTER password email
Registers your nickname in the NickServ database. Once your nick is registered, you can use the SET and ACCESS commands to configure your nick's settings as you like them. Make sure you remember the password you use when registering - you'll need it to make changes to your nick later. (Note that case matters! ANOPE, Anope, and anope are all different passwords!)
Guidelines on choosing passwords:
Passwords should not be easily guessable. For example, using your real name as a password is a bad idea. Using your nickname as a password is a much worse idea ;) and, in fact, NickServ will not allow it. Also, short passwords are vulnerable to trial-and-error searches, so you should choose a password at least 5 characters long. Finally, the space character cannot be used in passwords.
This command also creates a new group for your nickname, that will allow you to register other nicks later sharing the same configuration, the same set of memos, and the same channel privileges.
GROUP [target] [password]
This command makes your nickname join the target nickname's group. The password is the password of the target nickname.
Joining a group will allow you to share your configuration, memos, and channel privileges with all the nicknames in the group, and much more!
A group exists as long as it is useful. This means that even if a nick of the group is dropped, you won't lose the shared things described above, as long as there is at least one nick remaining in the group.
You may be able to use this command even if you have not registered your nick yet. If your nick is already registered, you'll need to identify yourself before using this command.
It is recommended to use this command with a non-registered nick because it will be registered automatically when using this command. You may use it with a registered nick (to change your group) only if your network administrators allowed it.
You can only be in one group at a time. Group merging is not possible.
Note: all the nicknames of a group have the same password.