Anchor internal links to the root of the book & Update README.md

Author: synaestheory

README.md

@@ -29,31 +29,31 @@ $ cargo install mdbook
 
 ### Building
 
-To build the book, do this:
-
+The most straight-forward way to build and view the book locally is to use the following command:
 ```bash
-$ mdbook build
+$ mdbook serve
 ```
 
-The output will be in the `book` subdirectory. To check it out, open it in
-your web browser.
+This serves the book at http://localhost:3000, and rebuilds it on changes.
+You can now view the book in your web browser. If you make changes to the book's source code, 
+you should only need to refresh your browser to see them.
 
 _Firefox:_
 
 ```shell
-$ firefox book/index.html                       # Linux
-$ open -a "Firefox" book/index.html             # OS X
-$ Start-Process "firefox.exe" .\book\index.html # Windows (PowerShell)
-$ start firefox.exe .\book\index.html           # Windows (Cmd)
+$ firefox http://localhost:3000                       # Linux
+$ open -a "Firefox" http://localhost:3000             # OS X
+$ Start-Process "firefox.exe" http://localhost:3000   # Windows (PowerShell)
+$ start firefox.exe http://localhost:3000             # Windows (Cmd)
 ```
 
 _Chrome:_
 
 ```shell
-$ google-chrome book/index.html                 # Linux
-$ open -a "Google Chrome" book/index.html       # OS X
-$ Start-Process "chrome.exe" .\book\index.html  # Windows (PowerShell)
-$ start chrome.exe .\book\index.html            # Windows (Cmd)
+$ google-chrome http://localhost:3000                 # Linux
+$ open -a "Google Chrome" http://localhost:3000       # OS X
+$ Start-Process "chrome.exe" http://localhost:3000    # Windows (PowerShell)
+$ start chrome.exe http://localhost:3000              # Windows (Cmd)
 ```
 
 To run the tests:

src/editions/transitioning-an-existing-project-to-a-new-edition.md

@@ -21,7 +21,7 @@ trait Foo {
 ```
 
 This code uses an anonymous parameter, that `Box<Foo>`. This is [not
-supported in Rust 2018](rust-2018/trait-system/no-anon-params.html), and
+supported in Rust 2018](/rust-2018/trait-system/no-anon-params.html), and
 so this would fail to compile. Let's get this code up to date!
 
 ## Updating your code to be compatible with the new edition
@@ -89,7 +89,7 @@ trait Foo {
 ```
 
 In Rust 2018, it's considered idiomatic to use the [`dyn`
-keyword](rust-2018/trait-system/dyn-trait-for-trait-objects.html) for
+keyword](/rust-2018/trait-system/dyn-trait-for-trait-objects.html) for
 trait objects.
 
 Eventually, we want `cargo fix` to fix all these idioms automatically in the same

src/rust-2018/cargo-and-crates-io/index.md

@@ -1,6 +1,6 @@
 # Cargo and crates.io
 
-[check]: rust-2018/cargo-and-crates-io/cargo-check-for-faster-checking.html
+[check]: /rust-2018/cargo-and-crates-io/cargo-check-for-faster-checking.html
 
 In this chapter of the guide, we discuss a few improvements to `cargo` and crates.io.
 A notable addition here is the new [`cargo check`][check] command.

src/rust-2018/control-flow/index.md

@@ -1,6 +1,6 @@
 # Control flow
 
-[async_await]: rust-2018/control-flow/async-await-for-easier-concurrency.html
+[async_await]: /rust-2018/control-flow/async-await-for-easier-concurrency.html
 
 In this chapter of the guide, we discuss a few improvements to control flow.
 The most notable of these *will* be [`async` and `await`][async_await].

src/rust-2018/data-types/index.md

@@ -1,6 +1,6 @@
 # Data types
 
-[fis]: rust-2018/data-types/field-init-shorthand.html
+[fis]: /rust-2018/data-types/field-init-shorthand.html
 
 In this chapter of the guide, we discuss a few improvements to data types.
 One of these are [field-init-shorthand][fis].

src/rust-2018/documentation/index.md

@@ -1,6 +1,6 @@
 # Documentation
 
-[sec_ed]: rust-2018/documentation/new-editions-of-the-book.html
+[sec_ed]: /rust-2018/documentation/new-editions-of-the-book.html
 
 In this chapter of the guide, we discuss a few improvements to documentation.
 A notable addition here is the [second edition of "the book"][sec_ed].

src/rust-2018/error-handling-and-panics/index.md

@@ -1,6 +1,6 @@
 # Error handling and Panics
 
-[qop]: rust-2018/error-handling-and-panics/the-question-mark-operator-for-easier-error-handling.html
+[qop]: /rust-2018/error-handling-and-panics/the-question-mark-operator-for-easier-error-handling.html
 
 In this chapter of the guide, we discuss a few improvements to error handling
 in Rust. The most notable of these is [the introduction of the `?` operator][qop].

src/rust-2018/macros/index.md

@@ -1,6 +1,6 @@
 # Macros
 
-[custom-derive]: rust-2018/macros/custom-derive.html
+[custom-derive]: /rust-2018/macros/custom-derive.html
 
 In this chapter of the guide, we discuss a few improvements to the macro system.
 A notable addition here is the introduction of [custom derive macros][custom-derive].

src/rust-2018/module-system/index.md

@@ -1,6 +1,6 @@
 # Module system
 
-[path clarity changes]: rust-2018/module-system/path-clarity.html
+[path clarity changes]: /rust-2018/module-system/path-clarity.html
 
 In this chapter of the guide, we discuss a few changes to the module system.
 The most notable of these are the [path clarity changes].

src/rust-2018/module-system/path-clarity.md

@@ -93,7 +93,7 @@ Finally, on nightly, you'll need it for crates like:
 #### Macros
 
 One other use for `extern crate` was to import macros; that's no longer needed.
-Check [the macro section](rust-2018/macros/macro-changes.html) for more.
+Check [the macro section](/rust-2018/macros/macro-changes.html) for more.
 
 If you've been using `as` to rename your crate like this: