re: Teach a man to Fish (Fark Board Beginner Questions)

While I don't use GIMP, the technique should be very similar.

Do you see the wand next to the laso selection? That should be the magic wand selector. It might be named something different. You should be able to use that to select similar parts of an image.

The pen with dots tool- that should be the curve tool I was speaking of (again, might be wrong as GIMP is not my software). If that is the correct tool, you should be able to draw lines with it then drag selection dots to make the line curve. I know it's difficult to describe, but it's not tough to do.