Update main page

src/essentials/intro.md

@@ -1,3 +1,7 @@
-### Essentials
+### Idiomatic Rust Snippets For Web Programmers
 
-Basic aspects of Rust programming language.
+In this book, basic aspects of the Rust programming language are explained with example codes to get you up to speed quickly with the concepts.
+
+More advanced topics such as design patterns are explained with complete projects. You may run them locally by downloading from the [project repository](https://github.com/saltukalakus/idiomatic-rust-snippets).
+
+This book does not intend to explain every aspect of Rust; however, you may find it useful, especially if you are planning to use Rust in your next web project as a backend.