嘿 there,

So I decided to make a GIMP tutorial, hoping that it will be useful for you. I'm not really a Gimp specialist, but I've worked with that programm before I got Photoshop and there are some things I know that might be interesting for you.

So, first, GIMP can be downloaded for free.
I've a download link for GIMP 2.6.4. here : link
(wow took me ages to find a version that's not german Oo)
This works, I just downloaded it from there too, because before I had a german version and for the tutorial I need to know the english words.

And your number 1 screencap 来源 is: link

So, after you've installed...