Okay kiddo, so there's something called the Swiss Federal Constitution, which is like a really important set of rules that the country of Switzerland follows. It's like a big rulebook that everyone should follow so that things in the country can work properly.
Now, the first part of this rulebook is called the Preamble. The Preamble is like a fancy way of saying "introduction" - it's the thing you read at the beginning of a book to know what it's about. The Preamble of the Swiss Federal Constitution talks about what Switzerland is all about and what the people who made the rulebook wanted for their country. It says things like how the Swiss people want to live in peace and freedom, and how they want to work together to make the country a better place.
The next part of the rulebook is called Title 1. This part is like Chapter 1 of a book - it's where you start reading the main story. Title 1 of the Swiss Federal Constitution is all about the "Fundamental Rights", which are like really important rules for how people should be treated in Switzerland. These rules say things like everyone should be treated equally, and no one should be discriminated against or treated unfairly because of where they come from, how they look or what they believe in.
So in short, the Preamble is like the introduction to the Swiss Federal Constitution, and the first chapter (Title 1) talks about the rules for treating people fairly in Switzerland.