Improve wordings and small additions

rust-intro.org

@@ -100,7 +100,7 @@
 ** Where to share, find help and stay up to date
 *** Online sharing/testing
     - [[https://play.rust-lang.org/][play.rust-lang.org]]
-    - [[https://godbolt.org/][godbolt.org]] (Not only Rust is supported)
+    - [[https://godbolt.org/][godbolt.org]] (Supports not only Rust)
 
 *** Chat (Discord)
     - [[https://discord.gg/rust-lang][The Rust Programming Language]]
@@ -426,6 +426,29 @@
    - Build chain/tool
    - Cargo calls ~rustc~, the Rust compiler
    - A Cargo project contains at least one crate
+   - Custom build scripts with ~build.rs~
+   - Builds just work
+
+** Cargo commands
+*** Create a new binary crate (~init~ does so in an existing directory)
+    #+BEGIN_SRC sh
+    $ cargo new [--bin] <PATH>
+    #+END_SRC
+
+*** Create a new library crate (~init~ does so in an existing directory)
+    #+BEGIN_SRC sh
+    $ cargo new --lib <PATH>
+    #+END_SRC
+
+*** Update build dependencies
+    #+BEGIN_SRC sh
+    $ cargo update
+    #+END_SRC
+
+*** Install crates
+    #+BEGIN_SRC sh
+    $ cargo install [crate]
+    #+END_SRC
 
 ** Hello, World
    Executing ~`cargo new foobar`~ creates a new project...
@@ -455,6 +478,7 @@
     #+END_SRC
 
 ** Docs
+   - Cargo help: ~cargo --help~ and ~cargo [SUBCOMMAND] --help~
    - [[https://doc.rust-lang.org/cargo/index.html][The Cargo Book]] (~$ rustup docs --cargo~)
    - Guillaume Gomez: [[https://blog.guillaume-gomez.fr/articles/2020-03-12+Guide+on+how+to+write+documentation+for+a+Rust+crate][Guide on how to write documentation for a Rust
      crate]]
@@ -474,8 +498,8 @@
 
 *** @@comment: comment@@
     Cargo downloads your Rust package's dependencies, compiles your
-    package, makes distributable packages, and uploads them to
-    [[https://crates.io][crates.io]], the Rust community's package registry.
+    package, makes distributable packages, and is able to upload them
+    to [[https://crates.io][crates.io]], the Rust community's package registry.
 
 ** The Rust (package) registry