diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1dd0eae
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# ToeCracker
+
+A Windows 2000/XP-compatible GUI client for the [Big Huge Labs English thesaurus](https://words.bighugelabs.com).
+
+![Screenshot of ToeCracker showing that "thesaurus" sounds like "toe crack"](./screenshot.png)
+
+## Installation
+
+1. Make sure you have .NET Framework version 2.0 or later installed.
+2. Download the latest `.msi` installer from [the releases page](https://tildegit.org/lucidiot/ToeCracker/releases/).
+3. Run the installer and follow its instructions.
+
+## Usage
+
+1. Open ToeCracker.
+2. Type in a word in the text box at the top.
+3. Click on the arrow button on the right to look up the word.
+4. Click on the various tabs to read the different categories of related words returned.
+5. Right click on any word to copy it to the clipboard or to use it as the next search.
\ No newline at end of file
diff --git a/screenshot.png b/screenshot.png
new file mode 100644
index 0000000..a6769f1
Binary files /dev/null and b/screenshot.png differ