The book that got me into physics was "Big Bang" by Simon Singh. The title is slightly misleading, as it covers a lot more than the big bang ( a lot is history of maths and physics ) and goes into astronomy and relativity aswell.
Another book I would recommend is "Why does E=mc squared?" by Brian Cox and Jeff Forshaw ( both physics professors at Manchester University, and Brian Cox is a well known physics documentary maker in the UK ) and deals with the axioms behind relativity, the maths that lead Einstein to Special and General relativity, and what they mean.
I don't know about the availability of either of these books in the US, although they should both be on the kindle.
Another book I would recommend is "Why does E=mc squared?" by Brian Cox and Jeff Forshaw ( both physics professors at Manchester University, and Brian Cox is a well known physics documentary maker in the UK ) and deals with the axioms behind relativity, the maths that lead Einstein to Special and General relativity, and what they mean.
I don't know about the availability of either of these books in the US, although they should both be on the kindle.