feat(tutorials): add a getting-started/quickstart page

content/docs/index.mdx

@@ -6,6 +6,9 @@ description: A spreadsheet formula engine with Google Sheets conformance, for Ru
 TrueCalc is a spreadsheet formula engine with Google Sheets conformance, for
 Rust, JavaScript/WASM, MCP, and (soon) a hosted API.
 
+New here? **[Getting started](./tutorials/getting-started.mdx)** installs the
+npm package and runs a formula in under a minute.
+
 - **[Tutorials](./tutorials/index.mdx)** — hands-on, build-it-yourself
   walkthroughs. Every step runs in your browser. Start here if you're new.
 - **[Learn](./learn/index.mdx)** — a beginner→advanced guide to spreadsheet

content/docs/paths/beginner.mdx

@@ -3,11 +3,12 @@ title: Beginner path
 description: "From your first formula to a working loan calculator, in order."
 ---
 
-1. [Your first formula](/tutorials/your-first-formula)
-2. [Split a bill with tip](/tutorials/split-a-bill)
-3. [Average a set of grades](/tutorials/grade-average)
-4. [Calculate a percentage change](/tutorials/percentage-change)
-5. [Build a simple invoice line](/tutorials/simple-invoice)
-6. [Work out a monthly loan payment](/tutorials/monthly-loan-payment)
-7. Concept: [Values and types](/learn/values-and-types)
-8. Concept: [Functions](/learn/functions)
+1. [Getting started](/tutorials/getting-started) — install and run a formula
+2. [Your first formula](/tutorials/your-first-formula)
+3. [Split a bill with tip](/tutorials/split-a-bill)
+4. [Average a set of grades](/tutorials/grade-average)
+5. [Calculate a percentage change](/tutorials/percentage-change)
+6. [Build a simple invoice line](/tutorials/simple-invoice)
+7. [Work out a monthly loan payment](/tutorials/monthly-loan-payment)
+8. Concept: [Values and types](/learn/values-and-types)
+9. Concept: [Functions](/learn/functions)

content/docs/tutorials/getting-started.mdx

@@ -0,0 +1,39 @@
+---
+title: Getting started
+description: "Install TrueCalc and run your first formula in under a minute."
+---
+
+TrueCalc is a spreadsheet formula engine with Google Sheets conformance —
+install it, and you can evaluate spreadsheet formulas from JavaScript or
+TypeScript.
+
+## Install
+
+```sh
+npm install @truecalc/core
+```
+
+## Run a formula
+
+```ts test
+import { createEngine } from '@truecalc/core';
+import assert from 'node:assert/strict';
+
+const engine = createEngine('google-sheets');
+
+// SUM behavior — fixture: google_sheets/math.tsv — "sum of individual arguments"
+const result = engine.evaluate('=SUM(A1, B1)', { A1: 100, B1: 200 });
+assert.deepEqual(result, { type: 'number', value: 300 });
+```
+
+`A1` and `B1` are the cell values you're supplying — TrueCalc's evaluator is
+stateless, so you pass in whatever a formula's references need.
+
+## Where next
+
+- **[Tutorials](/tutorials)** — build a real calculation step by step,
+  starting with [your first formula](/tutorials/your-first-formula).
+- **[Learn](/learn)** — a beginner-to-advanced guide to spreadsheet formulas
+  and workbooks with TrueCalc.
+- **[Reference](/reference)** — a page for every function, with a runnable
+  widget.

content/docs/tutorials/meta.json

@@ -1,5 +1,5 @@
 {
   "root": true,
   "title": "Tutorials",
-  "pages": ["index", "(beginner)", "(advanced)"]
+  "pages": ["index", "getting-started", "(beginner)", "(advanced)"]
 }