There can be hundreds of stars forming in these big dark clouds. People have seen the stars overhead for thousands of years. We give stars names so we can talk about them with each other. The brightest stars have names that were originally Arabic in origin. There are lots of catalogs with all kinds of names.
Some stars are listed in more than one catalog, so they have more than one name.
In ancient times, people looked up at the stars and picked out patterns that they saw. They often associated these patterns with pictures from the stories that they told. Most of the constellations that we use today come from the ancient Romans, and they depict many of the people and animals from their myths. The instrument I have used the most to study baby stars is an astronomy satellite called the International Ultraviolet Explorer spacecraft. I studied the ultraviolet light from my baby stars with it for many years to try to understand how they behave.