How can I learn Irish Gaelic?

How can I learn Irish Gaelic preferably for free online. I know Spanish almost fluently and a moderate amount of French. I know these languages are no way near Irish Gaelic but I'm really good at learning languages and I love it. I have an Irish name and I'm just about 100% Irish living in the U.S.. I don't know why i want to learn it, I guess just because for the reasons I mentioned before and I think it would be pretty cool since not many people speak it. I've never met anyone in my entire life that can speak it. I know with the internet there has to be some sort of course that will give me a basic understanding of the language and then I can build on from there by just reading and hearing it. When I mean free, I mean that it will cost me $0 total not 5 or 10. Do you have any ideas? Thank you!