examples section

Author: LadyBluenotes

src/routes/reference/basic-reactivity/create-signal.mdx

@@ -99,7 +99,25 @@ Returns a tuple `[getter, setter]` where:
 - **getter**: An accessor function that returns the current value and tracks dependencies when called within a reactive context
 - **setter**: A function that updates the signal's value and notifies all dependent computations
 
-## Usage
+## Examples
+
+### Basic Usage
+
+```tsx
+import { createSignal } from "solid-js";
+
+function Counter() {
+	const [count, setCount] = createSignal(0);
+
+	return (
+		<div>
+			<button onClick={() => setCount(count() + 1)}>+</button>
+			<span>{count()}</span>
+		</div>
+	);
+}
+
+```
 
 ## How It Works