RasPi - resize root
The sd-card I received was a 4GB (class 8) and the image is about 2gb, This leaves a lot of wasted space,
I found some instructions that let me use the spare space for a /home directory, and that worked well.
I then downloaded the debian image and copied it to a 8gb (class 4) sd-card. I then used a very helpful video to expand the root partition to use the full space instead of a /home directory. It worked exaclty as explained - thanks.