"I need a little more than just a book and vision
only believe in things that I can see "

I don't really understand this part of it. You need more than a book and a vision, and you only believe in things you see? If you believe in the things you see why would you need more than a vision?

"explain the definition of God and then explain diseases"

God is Love. He wants to help you but if you don't believe there's nothing that can be done on His part.

Explain diseases? Well, if you've read the Bible, and you should have since you seem to be denouncing the religion, then you'd know about The Fall. The Fall was when Adam and Eve ate the fruit from the tree. Before that, they had a perfect relationship with God. After it, they were seperated. As we all are seperated from God in our sin. With The Fall came diseases, death, unbearable pain during birth. Diseases are around because of us, not God.