diff --git a/book/src/introduction.md b/book/src/introduction.md
index 50165f2..b18d8ff 100644
--- a/book/src/introduction.md
+++ b/book/src/introduction.md
@@ -1,5 +1,7 @@
-# Introduction
+# cppXplorers : Explorations in C++ for applied sciences
 
-```admonish info
-A beautifully styled message.
-```
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+`cppXplorers` is a collection of experiments and examples in modern C++, with a focus on applied sciences and engineering. The project is organized as a mono-repository, where each crate is independent and self-contained.
+
+The purpose of this repository is to provide a space for exploring numerical methods, algorithms, and patterns in C++ in a practical and modular way. It is not intended as a tutorial or comprehensive learning resource, but rather as a set of working examples and references.
+
+Contributions are welcome. If you spot an issue, find an area that could be improved, or want to add your own example, feel free to open an issue or submit a pull request.
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diff --git a/book/src/kalman_filter.md b/book/src/kf_linear.md
similarity index 100%
rename from book/src/kalman_filter.md
rename to book/src/kf_linear.md