Thanks a lot for all the positive replies - it's very much appreciated!
1. I took the shot in the conservatory (it was a bit overcast outside and starting to get dark but it still worked OK), which gave a nice bit of natural light.
2. I shot in JPG mode as for some reason I can't get RAWs of my camera as the Canon software is mega-pants. I then used GIMP to tweak the levels and curves using what I learnt from
this guide. I didn't have to do any direct white balance adjustment - probably due to using natural light rather than tungsten.
3. I had the book I was photoing on a table, and then behind it I hung a dark napkin (all I had to hand) to give a bit of a backdrop. When I played with the levels in GIMP I made it darker, and then used the 'smudge' function to remove a crease that was there.