Here's two really useful books I'm reading at the moment which I think would be an aid to helping to understand scripture: -
'Misreading Scripture With Western Eyes', by E. Randolph Richards and Brandon J. O'Brien.
'Letters to the Church, A survey of Hebrews and the General Epistles', by Karen H. Jobes
Both books are available as e.books on Amazon which is how I carry the greater part of my religious library around with me these days.
Reading the Bible is a trans-cultural experience which is something that's overlooked by many Christians and causes a good deal of misunderstanding as to what the Bible really is saying about a Christian life of faith.
As I continue my studies I'll post other titles that I think any inquiring Christian might find useful.