If you want an intro to Peter Boghossian, I highly recommend the following two videos:
This books argues that “faith is an unreliable process for arriving at the truth,” and defines faith as: “pretending to know things that you don’t know.”
If you need an answer to an objective question like “what are the dimensions of the bathroom door that I need to replace?” (as opposed to a subjective question like “is ketchup or mustard better on a hot dog?”), there are better and worse ways at arriving at the truth. Better: use a tape measure, ask an expert. Worse: ask your dog, divine the answer from the stars.
I’d recommend this book not only for its merits on skepticism and critical thinking, but also for the sections on the Socratic Method to discuss these ideas when they come up in conversation.
Peter Boghossian has his finger on the pulse of the scientific community, and A Manual for Creating Atheists is firmly rooted in the current literature about the subject of epistemology and philosophy.