sir snake

I'm a noob but this is the way i figured out how to do it. use the eraser and erase everything but what you want in the picture. you can adjust the eraser size where it says brush size. save as gif. done.

you sir are my hero

I'm having troblem with something I'm sure is easy for you guys that have been doing this for awhile all I'm trying to do is save a pic after I've magnified it... i drag a pic to paint.net. it opens up. then i go over to the tools and use the magnifier. when i go to save the magnified aria, which looks magnified in the screen, all i have saved is the original pic. i have this pic of a bird i took the other day. turned out nice but i wanted to get a little closer shot of the head. same size pic just blown up to just show the head. I'm really new to this any help would be appreciated. thanks Don silly question I'm sure, but is there a (done) button?