"Love God" (aka that thing that's bigger than you are - your family, community, planet) and "love thy neighbour" are great rules of thumb - but real life is much more complicated and nuanced than that...and like I said, we don't really need the Bible to learn that.
Like I also said - the devil is in the details. If you stick rigidly to Bible precepts because it got the general rule of thumb right you get into a mess - you start believing ridiculous things like "God hates ****" and "evolution is only a theory" and all that kind of nonsense.
So no, not really a starter book - if you strip away the "veneer" you're left with nothing more than a common human intuition - that we are connected to something bigger that includes other people and that it behooves us to temper our evolutionary propensity for taking "unfair" advantages in favour of a more ecological and social-minded approach. Its hardly surprising that just about the only thing the Bible gets right is a common human intuition. But it does provide a valuable record of how that balancing act has evolved from strictly tribal to more "globally" inclusive as we read from Genesis to (say) Paul's "one body, many parts" (1 Corinthians 12:12-27) and Peter's realization that "God does not play favourites" (Acts of the Apostles 10:34). But we have had - "God" has had - another 2000 years to further develop that positive trend.