Luau is Roblox's scripting language. It's a fork of Lua 5.1 with type checking, performance improvements, and some Roblox-specific affordances. Compared to languages like JavaScript or Python, it's small, readable, and forgiving — which is exactly what you want from your first programming language.
This guide is for someone who has never written code before. AI tools make the learning curve much gentler than it used to be: when you don't understand something, you ask, and you get a personal explanation tied to your exact code. Here's how to learn Luau efficiently in 2026.
Step 0: Don't just ask AI to write everything
Tempting trap: "I'll just have the AI write the whole game while I watch." You'll get a game, but you won't learn anything, and the moment something breaks, you're stuck.
The right approach: have the AI write parts, then read those parts, then write the next thing yourself, then have the AI check your work. AI as tutor, not as ghostwriter.
Goal for your first month: be able to read every line of code in your game and explain what it does. The AI helps you get there faster than learning alone.
The 8 Luau concepts you need
You can build most Roblox games with these eight concepts. The AI can give you 50 more if you want, but everything else is sugar.
1. Variables
A variable is a named container for a value.
local money = 100
local playerName = "Alice"
local isAlive = true
local means the variable is scoped to the current block. Almost always use local. Skipping local makes the variable global, which Roblox doesn't love.
2. Functions
A function is a named block of code you can call later.
local function greet(name)
print("Hello, " .. name .. "!")
end
greet("Alice") -- prints "Hello, Alice!"
The .. operator joins strings. You'll use this constantly.
3. Conditionals
Decide between paths based on a condition.
if money >= 100 then
print("You can afford it!")
elseif money >= 50 then
print("Almost there.")
else
print("Save up first.")
end
4. Loops
Do something N times, or for every item in a list.
for i = 1, 10 do
print("Number: " .. i)
end
local fruits = {"apple", "banana", "cherry"}
for _, fruit in ipairs(fruits) do
print(fruit)
end
The _ is a convention for "I don't care about this variable" (the index of the fruit, in this case).
5. Tables
Tables are Lua's everything. They're arrays, dictionaries, and objects all in one.
local player = {
name = "Alice",
money = 100,
inventory = {"sword", "shield"},
}
print(player.name) -- "Alice"
print(player.inventory[1]) -- "sword"
6. Events and connections
Roblox is event-driven. Things happen, you react to them.
local Players = game:GetService("Players")
Players.PlayerAdded:Connect(function(player)
print(player.Name .. " joined the game!")
end)
Players.PlayerAdded is a signal. :Connect runs the given function every time the signal fires. This pattern repeats everywhere in Roblox — Humanoid.Died, Part.Touched, RemoteEvent.OnServerEvent, all the same shape.
7. Services
Roblox has a fixed set of named services that do specific things. You access them with game:GetService("ServiceName").
Important ones:
Players— the list of connected playersWorkspace— the 3D worldReplicatedStorage— shared between server and clientServerScriptService— server-only scriptsRunService— frame-by-frame events (Heartbeat, RenderStepped)DataStoreService— persistent storage
You'll memorize these over time. For now, just know that "I need to access X" usually means "I need to GetService for X."
8. Server vs Client
Roblox runs your code in two places: the server (one) and each player's client (many). They see different things:
- Server scripts run in
ServerScriptServiceorServerStorage. They can useDataStoreServiceand control game state. - Local scripts run in
StarterPlayer.StarterPlayerScriptsorStarterGui. They can useMouse,UserInputService, andLocalPlayer.
If you put server-only code in a LocalScript or vice versa, it crashes. The mental model: server is the authority, clients are presentation. Player data lives on the server. UI lives on the client.
How to use AI to learn faster
Use AI tools like Revix in a "tutor mode":
1. Ask "what does this do?" of any code you don't understand.
Paste the function. Ask the AI to walk through it line by line. You'll learn more in 5 minutes than from a 20-minute video.
2. Write something yourself, then ask AI to review it.
Here's my script that gives players coins when they touch a coin block. Is it correct? Are there bugs?
This is the highest-value learning move. You wrote it, the AI critiques it, you see what you missed.
3. Ask "what's the idiomatic way to..."
What's the idiomatic Roblox way to handle a player dying and respawning at a saved checkpoint?
You'll get the standard pattern, not whatever the AI invented.
4. Ask for variants.
Show me three different ways to detect when a player picks up an item.
Seeing alternatives teaches you when each is appropriate.
A learning sequence that works
Week 1: write your first 10 scripts by typing them out, even if AI suggests them. Don't copy-paste. Typing them out builds muscle memory.
Week 2: build a simple game (an obby, see How to Make a Roblox Obby with AI) with AI helping but you reading every line.
Week 3: deliberately break something and debug it. Read How to Fix Roblox Studio Errors Using AI.
Week 4: pick a Roblox API you've never touched (TweenService, ParticleEmitter, Pathfinding) and build something with it without AI. See how much you've internalized.
Common beginner mistakes
Not using local. Always type local before a variable name. The few cases where you don't want it, you'll know.
Trusting WaitForChild blindly. WaitForChild("Humanoid", 5) will return nil after 5 seconds. Always check the return value.
Putting everything in one giant script. Splitting code into ModuleScripts is messy at first but pays off hugely as your project grows.
Not testing in-game. Studio's edit mode doesn't run most scripts. Hit Play and exercise the actual game.
Asking AI to fix things you don't understand. Stop, read the error, understand it, then ask. You'll learn 10x faster.
Next steps
Now that you have the language fundamentals:
- How to Generate Lua Scripts with AI for Roblox — graduate from "AI as tutor" to "AI as co-developer"
- How to Make a Roblox Obby with AI in 30 Minutes — your first project
- How to Build a Roblox Game with AI — the bigger picture
Install Revix and write your first script in 10 minutes.