Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: While old and out of print, this book is a very good way to learn the basics of photography. You have to ignore most of the references to digital cameras as the technology has changed a lot.
[EX A]: Positive

[EX Q]: Good, sturdy platform for squatting under a barbell. Very firm. Laces are long enough to wrap around ankles, and back of shoe forms a fair notch to retain the laces and keep them from sliding up and off the shoes - would have been better had there been a rear loop. Shoes are better without the insoles because they put a spongy foam wedge under the heels. I replaced them with thin flat insoles from a pair of water shoes. One could cut the foam wedge and use the included insoles. There is no raised heel other than that foam wedge. They run true to size or slightly tight.
[EX A]: Positive

[EX Q]: I wasn't able to attend a in person class but I am so glad I bought the DVD to learn about childbirth and what to expect. I fully intend to use the breathing techniques and I learned a lot of information about labor and delivery. I really like I could go at my own pace and watch and re-watch any parts I needed.
[EX A]:
Positive