The following guide shows you step by step how you can get started with mIRC in only a few minutes.
1
Before you can start using mIRC, you will first need to download and install it. If you have already done that, you can skip to the next step.
You can download mIRC by clicking here. A download window should appear, similar to the one below. You should click the Run or Open button.

Internet Explorer Download Window
Once the download has completed, the mIRC installer will appear. You should follow the steps in the installer and then run mIRC.
2
When you run mIRC you will normally see the window below. This is called the Connect window and allows you to connect to IRC.
You will need to enter something for your Full Name and Email Address. These do not have to be your real full name and email address.
You will then have to choose your Nickname and Alternative nickname. These are the names by which other people will know you on IRC.
You can then click the Connect button and mIRC will connect to your chosen server. In the example below, we are connecting to the DALnet server.

mIRC Connect Window
3
Once you have connected to a server, your mIRC Favorites window will pop up. This window stores a list of your favorite channels and allows you to join them quickly and easily.
You can type in the name of a channel, such as #mIRC, or you can select a channel from the list. You can then click the Join button and mIRC will join your chosen channel.

mIRC Favorites Folder
4
In the window below, we have joined channel #mIRC on the EFNet IRC network, and my nickname is Jiminy. There are 79 people on the channel.
You can now type in a message, such as "Hello to all you good people!


mIRC Channel Window
5
That's it! You've connected to IRC, joined a channel, and sent your first message! Congratulations!
The world of mIRC and IRC are now yours to explore. Good luck and have fun!
Source: www.mirc.com