A DSLR camera is a professional camera for real photographers. They are more expensive and you can use detachable objectives. Depending on what pictures do you want to take you can choose different objectives. For example if you love animals you need a zoom objective. For plants and small animals you use objectives called macro. You have to invest lots of money so you have to know what to choose.With these cameras you have to learn how to take pictures. There are few features that you need to know. First off all you have to learn about exposure or timing and aperture. These are the most important function. In the beginning you can let your camera to choose the settings but later is important for you to do it. Another important feature is the ISO, or the light sensibility. If is to dark you can increase the size of the ISO. However if it is to high the picture will be very grainy. This way you will gain the best out of a print. Over the internet you will find lots of useful books, or you can participate at a photography course. They are not very expensive and they will give you a good start.