Inspiron 3558

So I am somewhat new to installing the Mac OS on PC's. I have done it in the past, but the last time I did it was in 2010 with my Dell Inspiron 1540 laptop. I have now almost completely forgot how to do it. I don't need a giant how to, but a mini guide would be great. Basically, I am wanting to use the iMessage feature on there and I'll use it for a few other things too. I will probably end up dual booting this (Windows 10) and whatever version my system can run. I'd prefer to install operating systems Yosemite or Mountain Lion. Any ideas on what I need to download? I have attached my specs, let me know if there is anything else I need. https://ibb.co/ghkapb https://ibb.co/cj5KFG