Try improve crash course

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

@@ -1,45 +1,25 @@
 # Introduction
 
-This is a brief tutorial designed to give you a quick run through the usage of
-Vide.
+This is a tutorial that introduces the concepts and usage of Vide.
 
 Vide is heavily inspired by [Solid](https://www.solidjs.com/).
 
-This tutorial assumes familiarity with Luau and Roblox GUI.
+This tutorial assumes familiarity with Luau and Roblox UI.
 
 ## Why Vide?
 
-Creating UI is a slow and tedious process. The purpose of Vide is to make UI
-declarative and concise, making it faster to create and more importantly easier
-to maintain. Vide achieves this using a reactive style of programming which
-allows you to focus on the flow of data through your application without
-worrying about manually updating UI instances.
+Creating UI is complicated, slow, and tedious.
+
+Vide tries to simplify and speed up this process by providing a declarative and
+reactive of style programming, which lets you focus more on designing the UI
+itself and not having to manually update or reparent UI instances.
 
 Some of the main focuses behind Vide's design choices:
 
-- Concise syntax.
-- Being completely typecheckable.
-- Independence from instance lifetimes.
-- Real reactivity.
+- Minimal syntax.
+- Complete typechecking
+- Independence from instances.
 
-## 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 {
-        PlayerStats(),
-        Inventory(),
-        Settings()
-    }
-end
-
-mount(App, game.StarterGui)
-```
+As with most declarative libraries, there is an initial learning curve to
+understand the concepts and usage. This tutorial tries to comprehensively
+cover these concepts and usage, more so than you need just to use it.