This post comes in regard to a X-Mas present a bit late ... but probably not too late in regard to painting.
There are so many books out there and each has information that is useful. But my favorite books of which each one contains masses of helpful information are both of the same author, Kevin Macpherson.
The first book that I got "by chance" and that was really such a lucky chance, is
"Fill Your OIL PAINTINGS With LIGHT & COLOR".
I lived in Hamburg, Germany, then and went to my hometown Munich for a visit. In an artist supplies shop I found this book in the section "english books". So happy to have "found" such a treasure box.
The second book I bought on purpose:
"lanscape painting Inside & Out".
I find both books highly recommendable or even "must have" literature not only for beginners ...