Okay kiddo, so a long, long time ago in ancient India, people didn't have TVs, computers or even books. They had to pass down their stories, beliefs and teachings from one generation to another by word of mouth. One way they did this was through something called the Vedas, which are like really old books that tell people how to live their lives and what to believe. There are four Vedas in total, and one of them is called the Yajurveda.
Now, the Yajurveda is a special Veda because it focuses on how to do important rituals and ceremonies in the Hindu religion. It tells people how to perform things like sacrifices and prayer for certain events, such as weddings, birthdays and even funerals. The words in the Yajurveda are written in a special language called Sanskrit, which is a bit hard to understand today since we don't use it very much anymore.
The Yajurveda is also split into two parts, called the "white" and "black" versions. These names don't mean that one is good and the other is bad, it's just a way for people to tell them apart. The white version has more explanations and stories, while the black version has more focused prayers and instructions for rituals.
In addition to being a religious guide, the Yajurveda is also an important historical document that tells us about life in ancient India. It talks about how people used to live, what they believed in, and even describes certain animals and plants that were around back then.
So in short, the Yajurveda is an old book that tells people how to do important religious ceremonies in the Hindu religion, and also gives us a glimpse into what life was like a long time ago.