@Corrinado,

Simple things could be like this:
Open mIRC and click on the chat window (this place is also for entering commands )
type these basic lines:
/Nick TheNameYouDesire_This_should_be_you_Apollo_usernam e
/server irc.apollo.rip +7000
/join #help

Now you should have joined Apollo #help channel

Like this:
/Nick Corrinado
/server irc.apollo.rip +7000
/join #help

I would suggest SSL connection with port +7000; don't add or remove any line or symbol except modifying your Apollo username, 3 lines are enough).
When connecting to Apollo IRC server, there will be a prompt for accepting SSL certificate, you just allow it (OK). Remember symbol + is required for SSL connection, don't remove it, lol.
If you does not want SSL connection, just type /server irc.apollo.rip 6667 or /server irc.apollo.rip because mIRC default port for connection is set to 6667.

Good luck