Below you will find a web-based IRC-client. You can use this to participate in the official OpenELEC IRC channel. You don't need any additional software installed on your computer to run this.
Otherwise, if you want to connect with your own IRC client, use these details:
Just ask the question(s) you really have. If someone can help, then sooner or later you'll get a response. It may take over an hour. A lot of people idle in the IRC channel, and just never leave, but that doesn't mean that they'll be available to help immediately. If you don't or can't just ask your questions and wait around for an answer, the IRC channel may not be a good option for you.