Removing Shop Now Buttons and renaming them

Hi,
Could someone please tell me how to remove individual “Shop Now” buttons from the three side boxes. I can remove them all by putting

}
.home_box1 .btn {
display:none;
}

but I want the option to remove individual ones.

Also I cant find the image files for the “Shop Now” buttons can anyone please tell me where they are as I would like to rename one as “News”