[Gimp-user] Basic image editing

[kvasar <forums gimpusers com>]

I need make some basic image editing, preferably in nondestructive way. I have
template with guidelines and image (.tif), I opened both as separate layers. I
need crop rectangular selection from image and place it into the template.
Should I trim image or make selection, copy and paste it into the template? 
Also, I want make rectangular selection on template and fill it with pattern.
How to make this?

-- 
kvasar (via www.gimpusers.com/forums)