Yesterday started my contract with Mozilla to write documentation. Today, I'm starting on re-writing the tutorial: https://github.com/rust-lang/rust/pull/15131 (apparently, bors is a bit backed up)

The new tutorial will be based around 'real' Rust development, and so will assume Cargo.

That said, http://crates.io/ should have install instructions on the site. I'll open a ticket and get on that.