Installing Rust
Starting from 0 means installing the Rust programming language in the first place. Fortunately, it couldn't be easier:
Unix-like (Linux, MacOS)
On Unix, run
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
in your shell. This downloads and runs rustup-init.sh, which in turn downloads and runs the correct version
of the rustup-init executable for your platform.
Windows
On Windows, download and run rustup-init.exe.
Updating Rust
rustup update