*How-To Nick Yourself With Less Bleeding:* 
Due to Nickserv on IRC networks you may find that your choice of using
your name, for example: "Bob", has already been registered or is
currently in use.
And since IRC doesn't permit two "Bob"s to use the same name,
anywhere/anytime on the same network you might end up logged in as
Guest-1234 instead of "Bob" which is really no problem, but no one will
know who you are, until you tell them your Bob, next they might/will
ask, which Bob, what's your call sign Bob?
Luckily there is a solution for licensed Amateurs, Your call sign
already belongs to you only, normal humans don't name their children
NO5J Smith, so your call sign will be available to register and use when
you first connect. and once it's registered no one but you, will be able
to to impersonate you, or block you from using your call sign.
Some folks prefer being talked to using there given names such as "Bob"
though. the solution to that is to register several variations with
Nickserv, such as NO5J, Jay-NO5J, NO5J-Jay, and also a couple more with
a _ appended to the end like  Jay-NO5J_ and NO5J-Jay_ the appended _ by
IRC convention indicates you are AFK or "away from the keyboard" there
are IRC commands that will set your status to AWAY like /away and /back,
but many modern IRC clients will/can do that for you whenever you
minimize the IRC window, or stop using the mouse or keyboard for a
period of time. It's a useful method of letting the others know that you
can't currently see their messages. Registering those four nick
variations with Nickserv will ensure that all four belong to you , and
will always be available to you.
You Register with Nickserv, by talking to it. from the channel window
you can send nickserv commands by typing /msg nickserv <command>, but I
find another method easier, using a Query, or Private message window,
which you can open by typing /query nickserv. this will open a new
window that is a Private communication link to nickserv, where you can
interact without anyone in the channel watching you make mistakes, like
entering your password into the channel window for everyone to jot down.
You will need a new password when you do that!!! and you probably will!!!
The most important nickserv command to learn is Help, or from the
channel window its ... /msg nickserv help , in the query window you only
need to type the word help. Nickserv will then spit back the "help"
about using help. and a list of commands that nickserv understands.
The one your interested in at this point is the Register command. To see
the help screen for that type help register. or from the channel window
it's /msg nickserv help register. You may be beginning to understand why
I recommend using a Query window, which reduces all the correctly
spelled text you have to enter.
Nickserv replies with instructions, syntax for the command and examples
usually. For the Register command it gives you this ...
-NickServ- ***** NickServ Help *****
-NickServ- Help for REGISTER:
-NickServ- This will register your current nickname with NickServ.
-NickServ- This will allow you to assert some form of identity on
-NickServ- the network and to be added to access lists. Furthermore,
-NickServ- NickServ will warn users using your nick without
-NickServ- identifying and allow you to kill ghosts.
-NickServ- The password is a case-sensitive password that you make
-NickServ- up. Please write down or memorize your password! You
-NickServ- will need it later to change settings.
-NickServ- You have to confirm the email address. To do this,
-NickServ- follow the instructions in the message sent to the email
-NickServ- address.
-NickServ- Syntax: REGISTER <password> <email-address>
-NickServ- Examples:
-NickServ-     /msg NickServ REGISTER bar This email address is being protected from spambots. You need JavaScript enabled to view it.
-NickServ- ***** End of Help *****
So first be sure you using the nick you want to register.
If not the command is /nick your-new-nick , and it will change it.
Nickserv wants you to create and *_ALWAYS REMEMBER_* a password, and it
might want to send you an email to verify you are actually you, or you
might want nickserv to be able to email you a forgotten password.
Sometimes we all loose access to email accounts, so *_ALWAYS REMEMBERING
_*is probably the the better approach.
So with those two pieces of information you can now register your nick.
The command from the query window is ... register your-password your
email@address ... type it in the nickserv query window ... and hit the
enter key.
If you typed that correctly your done registering that nick and have
created a nickserv account to store your other nicks in.
Next Command
If/when, Nickserv can't recognize you, when you connect to the network,
it will ask you to IDENTIFY yourself.
 From the initial server window, that command is ... /msg NickServ
IDENTIFY your-password ... then hit the enter key. You shouldn't need to
do this every time.
If/when, you forget the syntax, just type /msg NickServ help identify,
but usually nickserv spit's out an example of the proper syntax, for
what it wants.
The next nickserv command your going to use is the Group command, you
use it to add nicks to your nick account.
First change your nick to the next nick you want to register with the
/nick next-nick command.
Then from a nickserv query window you type ... group ... and hit the
enter key, and it will add that nick to your account.
To add another nick, switch to it with /nick next-nick, and then type
... group ... and hit enter again.
Rinse and repeat, until you've run out of nick ideas.
There are several other nickserv commands that are useful, you can study
them later with nickserv's help command.
So that's enough about nicks and nickserv for now. With a real IRC
client like Hexchat (for Windows) you may never have to interact with
nickserv again unless you change to another Vanity Call, or start
calling yourself Chelsea, instead of Bob. ;-) You will usually just
connect to the server and jump right into the channel all nicked up
properly. Google "Hexchat" and ask me or anyone else using it for help
in setting it up, you *will* like it.