Learning to play a musical instrument is not as easy as it sounds. When you see a performer on stage, please understand that they went through a lot to achieve such skill. When you're inspired to be like them, make sure you really love it so you won't have to stop in the middle of learning. It would be easy till the end of tutorial when you have a passion in it. Consider the most popular instruments such as piano, guitar, violin, drums, flute and saxophone because tutorials in these instruments are easier to find.
Next is listen to your heart. When you play a music, listen to the beat that connects to yourself. Each instrumet has a certain sound that fits a musician like a violinist who is technically brilliant playing a stringed instrument, something hard to learn but easier with passion. Find something that would be easy for you. If you are person with a little drama, a guitar will perfectly suit you. Add an amp for better sounding that would make your learning a big difference.