I just love cookbooks in general, but as part of my downsizing efforts in preparation for moving, I've gotten rid of most of them. But I did go through each one first, and copied out my favorite recipes.
A lot of them were old church or community group cookbooks. Although a lot of the recipes are a little odd, you can't beat them for quick and easy casseroles and desserts. They rarely take any special equipment or ingredients. I can whip up most of the recipes just with stuff in my pantry.
The only 'celebrity' cookbooks I have are the Martha Stewart Everyday Living cookbook, and a Frugal Gourmet (Jeff Smith) one from the '70s. The old one was my mom's; I don't think I've ever made any of the recipes, but I get a kick out of it because I always used to watch his show on PBS when I was a kid.
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The Martha Stewart I bought at a Half-Price Books for about $5, otherwise I wouldn't have bothered. The nice thing about it is that she starts each section out with a basic recipe (i.e. Fried Chicken 101), and they work really well.
The quirkiest one I have is 'Carla Emery's Old Fashioned Recipe Book.' It's less a cookbook than an encyclopedia of homesteading. It does have a lot of good recipes, but also how-to's on *everything*; soap & candlemaking (not as crafts, but as necessities), animal husbandry, dairy, gardening, building. I think there's even a section on how to bury your dead. People, not animals. I'm not even kidding. Total hippie commune handbook.
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Mostly, when I actually need a recipe, I go online. The nice thing there is that, since I like to tweak things to my own tastes anyway, I can compare several recipes for the same thing, which give me a starting point to work from.