Books from major publishers typically undergo a merciless editing process that can take something pretty good and make it exceptionally clear, memorable, and entertaining.

This rarely happens for online content, which I suspect is one reason I retain so little of what I've read online: it just wasn't that great.

Echoing a couple of others: pick up whatever book looks fun or entertaining to you. No judgement.

Developing a habit of reading books should be the real goal.

The "best" book is whichever one you'll actually read.