I want to share with you my first experience with mirc:
I didnt know anything. Quite frustrating, I wasnt prepared.

After a while I learned this: /list command
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/list philosophy
/list satan
/list whatever

Makes the mirc list all channels in regard to the topic of your choice.

Then klick on the lists of channels to enter them!
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In chat window:
Ctrl + K
Makes you able to chose the color of the whole sentence or individual letters
But people dont like this much i guess.
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/quit
command
Exits the whole mirc and types a slogan of your choice if you have made the preparations in the mirc-menu.

IF you have entered a slogan or other fun things in the mirc menu (somewhere in the mirc-menus), the slogan will appear for other people still chatting.

This is mine:
Ash: I admire its purity, its sense of survival; unclouded by conscience, remorse, or delusions of morality....Ash: One more word. I can't speak for your chances, but...you have my sympathies...A L I E N...