I have been considering kettlebells for a while now, but wasn't sure where to start. I've heard form is paramount or else you can hurt yourself. I have been doing Jillian Michaels DVD (30 day shred etc) for a year and a half and have gotten into the best shape of my life in my late 30's. However, I think it was too much of the same and I was starting to have some shoulder discomfort. So time for something new!I bought this book and couldn't wait to get started. I just finished week 4 of the Silver Program/1st section. I came into the program in decent shape (for me), but I'm already seeing a lot more definition in my arms and legs!I have modified the over the head moves to 10 lbs to make sure I don't reinjure my shoulder and I try to rest less time between sets to keep up my cardio that I was used to. Kettlebells are FUN. They take a little bit of getting used to and practicing, but once you get it, off you go! I look forward to my workouts.I bought a 10, 15 and 20 lb kettlebell. You can start with 1 and see where you are. She recommends 15 & 20, but I started with a lower for the shoulder issues (which have not bothered me at all!) Side note: I like the Bob Harper contoured kettlebells, it's nice to have that groove for your wrist. At my local Target too and on sale after Christmas.The book is VERY detailed and explains the form well. I wish the pictures were in color, but I'm sure that would greatly increase the price of the book. I work out early in the morning, so it's not always good lighting and when I first started, I'd have to look extra hard at the photos. The first few weeks go a bit slower as you are learning the moves and flipping back and forth between pages. I would flag the next day's workout pages with sticky notes for quicker reference.I would highly recommend this book for someone who wants a fresh workout. I think it would be pretty tough if you have never worked out before, but she has recommendations for people who are not in shape. And there are 2 more levels of workout to go. So there are a lot of modifications you can make!