Of what occupation was Peter before he followed Jesus?

Peter was a fisherman, that is what he was doing when Jesus called him to be a fisher of men. Matthew 4:19

How many books of the bible did Paul write?

We know that Paul wrote 13 books of the New Testament but if he wrote the book of Hebrews he wrote 14. There is no proof Paul penned the Hebrew epistle, however, many think the wrote that book. Paul's epistles begin with Romans and end with Philemon, and Philemon is followed by Hebrews.