You can learn some of the basic things about IRC. Learn how to move around and some important commands to get you started, as well as a bit of etiquette to make sure you do not make anyone angry.
Nickserv enables users to register their nick, so they are the only user with that name, helping prevent confusion and false identification. Registering your nick is the only way use our other services, such as ChanServ, MemoServ and HostServ.
If you want to create your own channel or help another moderate a channel, it is very good to know ChanServ. This manager helps to keep control on channel and give users privileges without you having to manage them one-by-one
We all like to keep in touch with our friends. MemoServ helps us to touch base and leave messages with other registered users whether they are online at that point or not.
If you want to be even more private, even more custom, than you already are, get your own virtual host using HostServ.