Well, I should've been clearer. He didn't abolish the laws per say, he abolished them for none jewish people. I don't remember where in the new testament this is from, my guess would be Peter, anyhow it states that Jesus simply meant that the laws where made for jewish people and that there was no reason for none jewish people to follow them. That's why you find his apostles breaking these laws (i.e having dinner with other none jewish people which wasn't allowed etc). Jesus pretty much annulled these laws because they weren't necessary, since he, himself was going to be sacrificed for everybody on this earth.
Christians view it as it's a new world with Jesus, new laws etc. He is the beginning and then view what happened before more like the history of the people etc. What's said in the old testament is still important, but Jesus is God to Christians. Whatever happened before Christ isn't really relevant since he came and basically said forget about the past, forget about how you've been living this is how it is from now on. Jesus himself states that he is sent to finish Gods work..
A basic example of Jesus "abolishing laws" is when he talks about turning the other cheek;
38 ¶ Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth:
39 But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
He pretty much says the laws from the old testament says eye for an eye but he comes with a different message now.
And no, I haven't read all the books. Well, some of them but not all. But I've read a lot from them and studied them (I study religion in college). As to your question, I'm not sure if they can co-exist. It pretty much depends on how you read and interpret them. For example, I was blown away by how much the bible and the Quran are alike. Many of the stories can be found in both, for example Jesus exists and is born to a virgin in the Quran too and he's a prophet there.
I don't want to get into other religious books such as the bhagavad gita or the story about SIddharta etc. that's a whole different animal breh
those books leaves my confused to this day lol