Put the javascript at bottom.
Print css media attribute.
Put images inside.
Inline small css
Inline google web-font.
Not sure whether that's a good idea.
Used compressed image.
Optimize image
Remove webfont
Replace image with cached versions.
Host css and js externally with 1 day cache.
Don't show course images in above the fold content.
Add some styling.
Put the images below
Put labels with the images.