There are so many options you need to consider when buying a digital camera, especially if you have never owned one before. For one thing digital cameras are usually more expensive than regular film cameras, but you will save money over time, since you will no longer have to buy film and you can delete pictures that are less than perfect. There are also many advantages to owning a digital camera, and once you've decided to go through with the purchase, it is important to do your (due diligence) research on the cameras you are interested in so that you can get the best deal for your money and be sure to own a camera that meets your specific needs.
Normally, digital cameras will be less expensive online or at a large department stores. However, in either of those locations, you will not get the service or knowledge of a real photography professional, so it might be worth your time and money to explore some of the nearby specialty camera shops in your neighborhood. There you will find that the owners almost always have lots of experience with using all of the cameras that they sell. If you buy a digital camera at a specialty store you might also receive a discount on services such as getting prints and framing.
Also, in specialty stores as in department stores and other places where cameras are sold, the merchandise is usually kept in a locked case. Take the necessary time to ask the owner to see all of the cameras you find interesting. You can compare statistics such as photo quality and features, but without holding the camera and testing it out, you will not be able to tell if it is a good fit for you. If there are no batteries already in the camera, ask for some. The sales person should be able to provide them so you can actually turn the camera on and test it.
If you are not yet using a digital camera for professional purposes, picture quality is probably not of utmost important to you. By going with a lower resolution digital camera, you can often save on price. Before you go to the store, decide what qualities you want and stick to your decision - don't let a sales person talk you into a more expensive camera. The same goes for features. You will need a good zoom lens, but specific capabilities depend on the camera's intended use. Overall, just go with your gut. Most places offer a return option, so if you don't like the digital camera, you can always bring it back and get another.