Merge reactive scope refactor

docs/tut/crash-course/1-introduction.md

@@ -3,7 +3,7 @@
 This is a brief tutorial designed to give you a quick run through the usage of
 Vide.
 
-Vide is largely inspired by other UI libraries such as Solid and Fusion.
+Vide is heavily inspired by [Solid](https://www.solidjs.com/).
 
 ## Why Vide?
 
@@ -19,7 +19,29 @@ Some of the main focuses behind Vide's design choices:
 - Reducing the amount of imports needed for usage by leveraging Luau's syntax
   and semantics.
 - Being completely typecheckable.
-- Flexibility, particularly with integrating other libraries and allowing users
-  to use their own patterns.
-- A powerful reactive system that does not interfere with the lifetime of
-  instances.
+- Flexibility  with integrating other libraries and allowing users to use their
+  own patterns.
+- Independence from instance lifetimes.
+- A powerful reactive system that can update specific properties as a result of
+  state changes, updates are immediate with no diffing needed.
+
+## Structure Of A Vide App
+
+The entry point for all Vide apps is the `mount()` function. This function
+sets up Vide's reactivity system. It takes and calls a function that should
+create your entire app, and will apply its result to a target.
+
+In Vide, your app should be composed of functions, each function creates a
+specific part of your app, and can be reused if needed. These functions are
+called *components*.
+
+```lua
+
+local function App()
+    return create "ScreenGui" {
+        create "TextLabel" { Text = "hi" }
+    }
+end
+
+mount(App, game.StarterGui)
+```