My suggestion is to read C.S. Lewis' "Mere Christianity". He's about as bright and well-educated a man as you would care to meet -- got the coveted Triple First at Oxford before they dumbed it down -- and began his career as an angry atheist. He lays out the evidence and arguments very clearly.
Read him with an open mind and see what you think. If you want something more imaginative and creative, I'd suggest his book "The Great Divorce". It's a quick and enjoyable read.
Most excellent recommendations!
Bookmarking