>what do I do with all this information?
You hold on to it and study it to wherever you can.
>What changes do I need to make in my life?
Sin less. Unlike some bozos here say, you will never be "worthy" of God's grace, unless your one of those special ones who can forgive all and sin not. But your job is to purify yourself as much as you can, for you are God's temple, and to keep God's blessing upon yourself and share its with other people.
>How do I become a good Christian?
You pray, above all else, and you study your Bible. If you have a good Church community, join it, make one yourself even.
>What should the Bible mean to me?
God's word and wisdom, inspired and put to word by men throughout the thousands of years.
>How do I do what is says in the many parts of it?
You interpret it at first, then you realize there's no need to interpret Grace.
>How do I accept God with all my heart?
You reforge your heart through the life and works of Christ.