diff --git a/README.md b/README.md
index 07748861..623bbe7e 100644
--- a/README.md
+++ b/README.md
@@ -11,25 +11,54 @@ are highly likely to work on downstreams or closely related codebases.
 
 ## Installation
 
-1. Clone the repository to your machine.
-1. [Install Rust] or update your existing installation.
-1. In your `SpacemanDMM` directory, run `cargo build -p cli`.
-   * `-p cli` is used to build only the command-line tools and not the editor,
-     which requires Qt.
-   * Add `--release` for a release build, with slightly more optimization flags
-     set.
+Binary releases for Linux and Windows are available on the [releases] page, but
+may not always be up to date.
 
-[Install Rust]: https://www.rust-lang.org/en-US/install.html
+To build locally, begin by [installing Rust][rust] or updating your existing
+installation. SpacemanDMM is tested against stable Rust.
+
+For one-time installation, run `cargo install --git https://github.com/SpaceManiac/SpacemanDMM cli`
+to install the `dmm-tools` binary to `~/.cargo/bin`.
+
+For development or easy installation of updates, clone this repository and run
+`cargo build -p cli --release` to create `target/release/dmm-tools`. See the
+[source readme] for a list of the available packages, or omit `--release` for a
+debug build.
+
+[releases]: https://github.com/SpaceManiac/SpacemanDMM/releases
+[rust]: https://www.rust-lang.org/en-US/install.html
+[source readme]: ./src/README.md
 
 ## Usage
 
-Executables are placed in `target/debug` or `target/release` depending on build
+Executables are placed in `target/release` or `target/debug` depending on build
 type. The CLI binary is known as `dmm-tools`. For best results, run from the
 directory containing `tgstation.dme`.
 
-Basic usage: `dmm-tools minimap -o dir/to/save/minimap path/to/map.dmm`.
+Basic usage: `dmm-tools minimap _maps/map_files/BoxStation/BoxStation.dmm`.
 
-More detailed usage instructions are available in the `--help` output.
+By default, output is saved to `data/minimaps`, which can be changed with the
+`-o` flag. The `-e` flag, specified before the subcommand, can be used to load
+a different `.dme` file. More detailed usage information is available in the
+`--help` output.
+
+Support is currently provided in /tg/station13's coderbus (ping `SpaceManiac`)
+and on GitHub's issue tracker. Pull requests are welcome.
+
+## Language Server
+
+SpacemanDMM also provides a [language server] providing intelligence for the
+DreamMaker language. A [Visual Studio Code plugin][vsc] is available, and will
+install released language server binaries automatically. Details on available
+features are listed in the language server's [package readme][ls-readme].
+
+Use `cargo build -p dm-langserver` to build a local copy of the language server
+for debugging or development purposes. The plugin can be configured to run a
+locally built language server rather than the binary releases.
+
+[language server]: https://langserver.org/
+[vsc]: https://marketplace.visualstudio.com/items?itemName=platymuus.dm-langclient
+[ls-readme]: ./src/langserver/README.md
 
 ## Recommendations
 
diff --git a/src/langserver/README.md b/src/langserver/README.md
index 79760d1d..abbb9733 100644
--- a/src/langserver/README.md
+++ b/src/langserver/README.md
@@ -8,6 +8,20 @@ scripting language of the [BYOND] game engine.
 [language server]: https://langserver.org/
 [BYOND]: https://secure.byond.com/
 
+## Diagnostics
+
+* Preprocessor:
+  * Redefining a macro which is already defined.
+  * Undefining a macro which is not defined.
+  * Unterminated conditional blocks (`#if`/`#ifdef`).
+  * Using a define in a [buggy context][2072419].
+* Language:
+  * Incorrect or correct-but-strange syntax.
+  * Non-constant initial values for object variables.
+  * Integer constants which are outside of range.
+
+[2072419]: https://secure.byond.com/forum/?post=2072419
+
 ## Workspace symbol search
 
 * Searches macros, types, procs, and vars.