No specific books, but savings is more about other goals and not specific to money - start with the other goals and their timelines, costs, etc and work backward from there.

"I need $1M in 20 years so that I can retire..." Or something like that. (You'll need to figure out your own numbers, but you could start with 30x what you expect to spend). Or shorter term goals "I need $x for a house down payment ..."