I have an Iraqi passport and I need to travel to Ireland. I am just 14 years old, and am traveling by myself from Dubai to Ireland. Should I have a visa or not? And what type of visa should I have? And how can I apply for it? And how long does it take to be done?
Yes, you need a visa.
The Irish Embassy has a "visa faciliation office" in Dubai at 4th Floor Monarch Tower No. 1 Sheikh Zayed Road (Opposite Trade Centre) - that's where you need to go.
As for what type of visa you need and how the application process looks like, that depends on why and how long you want to travel to Ireland. The embassy's website has more details information, or the people at the office will tell you.