I used the Gimp for a while when I was running Linux on a second drive. This was back around RedHat 6. I started to get the hang of it but it was slow going. I've used PSP for so long, learning a new program was difficult and I kept wanting to go back to PSP
After a lot of my friends in the Graphics business kept at me about how much better Photoshop was than PSP, I finally broke down and got a copy off Ebay but it's the same thing. I'll play with it awhile, get frustrated and go back to PSP
But I'm hanging in there and slowly but surely learning the differences.
Who knows, I may go back and try the Gimp again!