Light for Visual Artists

 I got a copy of this book for my birthday. I think it's going to be very useful.

I especially found the bits about colours of shadows interesting - I had no clue about that at all. Knowing why things appear the way they do will make it much easier. 

It will take a few readings to get my head round all the science, but I was encouraged when towards the end he said 'Art is not physics'!