In the fall I will be commuting to school and need was wondering if you guys had any suggestions on good cargo racks and/or commuter backpack. I will be riding a vintage Nishiki Olympic 12 speed.

I will have to carry about 15lbs of books/laptop which isn't much. One of my main concerns is my laptop. If I crash there and break it, I won't be able to replace it anytime soon. So what would be the best way to store it and carry all of my books when commuting?

Any help/ suggestions would be awesome!