To access IRC, use Mirc to connect to an IRC server. After you connect to the server you can join a channel immediately, or you can ask to see a list of channels. Connecting to the IRC server is like walking into a building with many rooms. If you know what room you want, you can go directly there. Otherwise you can ask to see a list of some or all of the rooms.
Channels often contain several overlapping conversations.
Before you can connect to an IRC server, you have to set up mIRC with the server information. You should set up more than one IRC server, in case the one you usually use does not work. Choose Setup from the File menu. This does not have to be your real name. Add a server.