Contribute to open source Rust projects by forking the repository, making changes in the src directory, formatting code with rustfmt, and submitting a pull request.
git clone https://github.com/rust-lang/book.git
cd book
rustup component add rustfmt
rustfmt src/ch00-00-introduction.md
git commit -m "Fix typo in introduction"
git push origin main
Check CONTRIBUTING.md for specific rules, such as avoiding edits to the nostarch directory and searching for existing issues before reporting new ones.