You can even get it cheap on a site like half.com

But in the long run, you should always read the book for the plan you are doing. There just might be little things you miss (or never hear of to begin with) that could benefit you. I've read both Atkins and PP...and I certainly don't remember Atkins well enough to say I know PERFECTLY the differences. But here's a general summary (with the addon of "READ THE PP BOOK!")

Protein Power has 3 phases.
Phase I
Phase II
Maintenance

Phase I is similar to Atkins induction, but a little more carbs:
30 grams of carbs a day NOT INCLUDING FIBER grams.
This needs to be spread out throughout the day.
No more than 10 to 12 grams of carbs per meal.
(my book ?older says 40 grams...but this site seems to say 30)

Phase II is for those that have been on Phase I for some time OR for those who don't have much to lose.
55 grmas of carbs a day NOT INCLUDING FIBER grams.
Again, spread pretty much evenly throughout the day

Maintenance is just that...the level of carbs your body can remain at and not gain weight back.

Another difference:
There are NO limitations to the food choices.
If you want to use your 10 grams of carbs up on a cookie for dinner, that's fine. As long as the TOTAL carbs doesn't go over 10.
Of course, you get a lot more out of a cup of strawberries than a measly cookie...but it's up to YOU how you want to spend those carbs.

Dry red wine is permitted everyday.

That's pretty much it off the top of my head.
But I really really really advocate reading the book (if you choose this plan).
Even if it takes you a month to do it.

-- Loretta