Okay, kiddo, so the Catholic Church has some special beliefs about Mary, the mother of Jesus. These are called the "Marian doctrines." Let me break it down for you:
1. Mary was conceived without original sin: This means that Mary was born without any sin, which is different from the rest of us who have to ask God for forgiveness. It's like she got a head-start because she was going to be the mother of Jesus.
2. Mary remained a virgin: The Catholic Church teaches that Mary never had any other children except Jesus. This is because she was special and dedicated to God in a unique way.
3. Mary was assumed into heaven: This means that when Mary died, she didn't just go to heaven like other people. Instead, she was taken up into heaven body and soul. The Church believes this because Mary was so important to God and Jesus.
4. Mary is the queen of heaven: This is like saying that Mary is the most important lady in heaven. She's like the queen of the castle because she was so good and faithful on earth.
These beliefs are important to Catholics because they help us to understand Mary and her role in the story of Jesus. We believe that Mary is a special lady who can help us to get closer to God.