Add a Help page.

lib/main.dart

@@ -7,6 +7,7 @@ import '/pages/income.dart';
 import '/pages/asset.dart';
 import '/pages/report.dart';
 import '/pages/settings.dart';
+import '/pages/help.dart';
 import '/db.dart';
 
 void main() {
@@ -70,6 +71,8 @@ class _HomePageState extends State<HomePage> {
         page = ProjectionPage();
       case 4:
         page = SettingsPage();
+      case 5:
+        page = HelpPage();
       default:
         throw UnimplementedError('No widget for page $pageSelected yet!');
     }
@@ -118,6 +121,10 @@ class _HomePageState extends State<HomePage> {
               icon: Icon(Icons.settings),
               label: Text('Settings'),
             ),
+            NavigationRailDestination(
+              icon: Icon(Icons.help),
+              label: Text('Help'),
+            ),
           ],
           selectedIndex: pageSelected,
           onDestinationSelected: (value) {

lib/pages/help.dart

@@ -0,0 +1,72 @@
+import 'package:flutter/material.dart';
+
+class HelpPage extends StatelessWidget {
+  const HelpPage({
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Column(
+      children: [
+        Expanded(
+          child: Padding(
+            padding: const EdgeInsets.all(8.0),
+            child: Container(
+              decoration: BoxDecoration(
+                borderRadius: BorderRadius.circular(4),
+                color: theme.colorScheme.onPrimary,
+              ),
+              child: Column(
+                children: [
+                  Text("This app is meant to be a simple budgeting tool,"
+                      " allowing you to view your income and expenses at a high level"
+                      " without micro managing specific budget items or adding receipts."),
+                  //Text("Another paragraph.")
+                ],
+              ),
+            ),
+          ),
+        ),
+        Row(
+          children: [
+            Expanded(
+              child: Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: Container(
+                  decoration: BoxDecoration(
+                    borderRadius: BorderRadius.circular(4),
+                    color: theme.colorScheme.onPrimary,
+                  ),
+                  child: TextButton.icon(
+                    onPressed: () {},
+                    icon: Icon(Icons.code),
+                    label: Text("Code Repository"),
+                  ),
+                ),
+              ),
+            ),
+            Expanded(
+              child: Padding(
+                padding: const EdgeInsets.all(8.0),
+                child: Container(
+                  decoration: BoxDecoration(
+                    borderRadius: BorderRadius.circular(4),
+                    color: theme.colorScheme.onPrimary,
+                  ),
+                  child: TextButton.icon(
+                    onPressed: () {},
+                    icon: Icon(Icons.web_asset),
+                    label: Text("Personal Website"),
+                  ),
+                ),
+              ),
+            ),
+          ],
+        )
+      ],
+    );
+  }
+}