I don’t know of any book devoted specifically to this. Just leaf
through as many jewelry-making books as you can find and take notes
on comments of interest, or photocopy relevant pages. Eventually,
you’ll find some books you want to purchase, too. Most of the things
that are said about silver are also relevant to working with base
metal. The disadvantage of working with base metal is that it is
hard to find a series of matching solders, such as exist for silver
and gold. However, mixed metals are a lot of fun! Enjoy… Judy
Bjorkman