I would imagine it would depend on where you're from? I'm from Canada and the book that helped me more than anything else is 'The Wealthy Barber Returns'.

'Millionaire Teacher' is also fantastic, and I believe is U.S. based (been a few years).

Both books teach the fundamentals of how to save/invest in a safe manner in a way that is easily digestible. Barber especially is an engrossing read.