If you do more research and keep some regular fish first, then later on a stingray is going to be something you can handle. If water change/sump/filtration is out of your league, please do not start with a stingray for your first fish.
Since this is in a saltwater section, here is my experience. I set up a tank and kept a mix of fish for a few years. Then I sold off all fish and re-did my setup to be more elasmo-friendly. I kept an Urobatis species of ray for it's full natural lifespan, starting when it was tuna can diameter. I had this ray in three different addresses when I moved from MN to IL to MN again. You too can have similar success by taking your time and doing research. Don't jump right in.