Hello from Bulgaria :) can you tell me the settings for optimal quality of taking pic with samsung S730? because sometimes when i change it to manual or ASR the picture quality is awfulll... thanks

That depends on the subject matter and, more importantly, on what YOU want the picture to say. Usually for landscapes you'd want a deep depth of field while for portraits you'd want a narrow depth of field. You wouldn't want a picture taken outdoors on a sunny day to have the same mood as a picture taken at night. That's why there are so many settings. If there was such a thing as optimal settings for all pictures, we might not need anything other than on/off switch and the shutter release button.

Again, YOU must decide the settings (even if it's only to hand control over to the camera in one of the automatic modes). You and I could be taking pictures of the same thing at the same time using the same type camera, and there's a good chance we'd be using different settings. It's not that one set of settings is better or worse than the other.