Another book I like a lot that I haven't heard mentioned here is Strong Women Stay Slim by Miriam E. Nelson. It talks a lot about the value of strength training in losing weight and maintaining weight loss. Also has sections on food, cardio, goal setting, etc to help pull it together. Note that this is a rather gentle introduction to the concept of strength training--no advanced body building here. She has a website, www.strongwomen.com
, that has some example articles, if you'd like a preview. I liked this book so much I got my mother another book of hers, Strong Women Stay Young, for Christmas last year.
I also enthusiastically second Ilene's recommendation of the Krista's Women's Weight Training website.
Of course, you only have to look at the 'Our Photos' and 'Introduce yourself' thread here on the Maintainers forum to see the value of strength training. Or go read some of the LWL forum. Really spectacular results!
Well, now that I'm pumped up, I'm off to lift.
Long enough have you dream'd contemptible dreams,
Now I wash the gum from your eyes,
You must habit yourself to the dazzle of the light and of every moment of your life.
-from Song of Myself, Walt Whitman