Probably an easy question to solve but I'm having a brain fart at the moment.
My home page blog post images show up blurry because they get resized to fit. What I would like is for my images to get cropped to fit and when you click on the read more it would show the original image at the top of the article. example this theme http://demo.fabthemes.com/western/blog/
You can see the images are nice sized thumbnails that are fit properly and when you click read more it shows the whole image.