AFAICT, these are just different editions of the same book, but I couldn’t determine what the best or latest edition is. To save people the same Googling that I did, Archive.org has a version available online here, and the Harvard Book Store sells a paperback copy in stock here for $34. (Amazon doesn’t appear to actually have any edition for sale at a reasonable price.)
The Amazon link in the post is for the third (and latest) edition, only $28. Your other links are for the second edition, except the Harvard link’s dead.
The Amazon link in this post is for Thinking Physics: Understandable Practical Reality. I also found Thinking Physics: Practical Lessons in Critical Thinking and Thinking Physics is Gendaken Physics.
AFAICT, these are just different editions of the same book, but I couldn’t determine what the best or latest edition is. To save people the same Googling that I did, Archive.org has a version available online here, and the Harvard Book Store sells a paperback copy in stock here for $34. (Amazon doesn’t appear to actually have any edition for sale at a reasonable price.)
The Amazon link in the post is for the third (and latest) edition, only $28. Your other links are for the second edition, except the Harvard link’s dead.