I enjoyed "Thin Ice: Unlocking the Secrets of Climate in the World's Highest Mountains by Mark Bowen". This is a classic popular science book, by a working scientist who certainly believes in human caused global warming. This isn't available as an ebook, but his "Censoring Science", a portrait of NASA climate scientist James Hansen, has a Kindle version. I have not read it, but it gets good reviews on Amazon.
I don't assume that the science questions have been settled in favor of significant warming in the near term. I just bought "What's the Worst That Could Happen? by Greg Craven" and I hope it will give me a better understanding of the arguments pro and con.