I have a Sony Alpha A100. Yeah, it's pretty old.
It still works really well, and I take some really good photos with it, the only concern I have is that it does not have "Double Exposure" or "Multiple Exposure".
I tried a lot on GIMP, but i'm not the kind of guy who's all into editing. I got GIMP cause it's free, and I didn't want to pirate Photoshop.
How do I edit photos as good as Dan Mountford? I almost cried looking at his photos. They're unbelievable.