Yvonne,
First, welcome to TFL and to the enjoyment of responsible firearms use.
I want to endorse those who suggest your first, perhaps your only, handgun should be a revolver; more specifically, a .357 magnum/.38 Special. Revolvers are easy to shoot, safe, simple, extremely reliable, accurate, and lower cost than comparable quality semiautomatic pistols. The .357 magnum/.38 Special (.357 magnum revolvers fire both types of rounds) offers an extremely wide variety of ammunition choices, from "hot" .357 magnum loads to inexpensive .38 Special rounds for practice. As you’ll learn, the combination of firearm and ammunition provides a "tailored tool" that should be carefully selected for your intended use (i.e., target practice, versus home defense, versus camping protection, and so forth).
I recommend you consider the Ruger GP-100 and the Smith and Wesson 686 –- both with four-inch barrels and all stainless steel construction. These are very high quality revolvers that will last a lifetime with little more than cleaning and lubrication/preservation. They are also very accurate, relatively inexpensive, and mid-sized -– small enough to carry, but large enough to fire accurately and with reduced recoil.
Fire both revolvers to ascertain which provides the greatest "comfort": ergonomics, hand/grip feel, sight picture, pointing ease, accuracy at various ranges, and so forth. Both handguns are excellent, so you cannot go wrong with either selection.
Finally, practice, practice, and practice some more. Responsible firearms ownership means safe operation and, as you know, this requires practice. Concentrate on safety, not only in the functioning of your sidearm, but also in its maintenance, storage, transportation, etc. Evaluate scenarios and "what if" situations, so you’ll be prepared to use you firearm legally, responsibly, and effectively.
Last –- but certainly not least -– have fun. This is a festinating sport and hobby, as well as a means of ensuring your family’s security.