Exercise Equipment For The Home

I want some body strength training at home without equipment. I am a beginner or no information at all, do not know what the practice does what? or training is appropriate for a specific purpose? I just want a good chest, shoulders, belly! I usually do pushups, crunches, push-ups can tell the benefits and some changes in training and can you tell us a bit of exercise for me that I can do at home without equipment. and also shed light on diet.thanks can recommend a book for this purpose. tell me what exercise is to do what (is better than the book contains diagrams of how to do a particular exercise).