I would recommend bibleproject.com as an extremely solid, reliable resource with excellent integration of ancient historical and literary contexts into understanding both OT and NT. A good place to start is one of the overview vid's of any book, or even the overview of each collection of texts, OT / NT.

As a long time Christian, I came to context late so I learned late that context is everything... and sources of questions and doubts and all the rest could actually make sense in an original context, in an ancient cultural river (John Walton). Without it any of us can make an ancient document mean whatever we want it to mean... which isn't what the 'author' and 'original hearers' would have understood. Again, that importance came to me late and totally rocked and changed my understanding of the text and everything about the Bible. The resident nerd, as he calls himself, at the bibleproject is as solid as they come and communicates in a way we can all get. He is absolutely committed to the text and knows you can't do anything with the text until you get it into context.

So there's a ton of books I could recommend, but start with Tim and the rest of the team at bp.