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docs/README.md

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+# YesNt Documentation
+
+YesNt is a line-based, interpreted scripting language inspired by assembly.
+Each line is one statement. There are no multi-line expressions.
+
+## Guides
+
+| Document                                    | Description                                          |
+| ------------------------------------------- | ---------------------------------------------------- |
+| [Language Reference](language-reference.md) | Every statement, token, and operator in the language |
+| [Library API](library-api.md)               | How to embed the interpreter in a C# project         |
+| [Editor](editor.md)                         | How to use the terminal code editor                  |
+
+## Quick start
+
+### Running a script from the command line
+
+```bash
+dotnet run --project YesNt.Interpreter.App -- path/to/script.ynt
+```
+
+### Hello world
+
+```ynt
+print_line Hello, world!
+```
+
+### Variables and output
+
+```ynt
+var name = Alice
+print_line Hello, ${name}!
+```
+
+### Functions
+
+```ynt
+func greet:
+    var msg = Hello, ${name}!
+    print_line ${msg}
+return
+
+var name = Bob
+call greet
+```
+
+Script files use the `.ynt` extension by convention.