Roblox Luau Scripting Tutorial for Beginners

Every Roblox game runs on Luau. Even if you use AI to generate your scripts, understanding the language makes you dangerous. You'll read code faster, debug smarter, and prompt better.

Here's what matters.

Scripts in Roblox

Three types:

• Script — runs on the server. Game logic, data saving, security.
• LocalScript — runs on the player's device. UI, camera, input.
• ModuleScript — shared code other scripts can import.

Server scripts control truth. Local scripts control experience. Module scripts prevent repetition.

Variables

local playerName = "Alex"      -- string
local health = 100              -- number
local isAlive = true            -- boolean
local inventory = {}            -- table

local means the variable stays in scope. Always use it. Global variables are bugs waiting to happen.

Functions

local function damage(humanoid: Humanoid, amount: number)
    humanoid.Health -= amount
end

Small, named functions. Each one does one thing. This is how you keep scripts readable at scale.

Events

Events are Roblox's nervous system. Something happens, your code responds.

local part = workspace.KillBrick

part.Touched:Connect(function(hit)
    local humanoid = hit.Parent:FindFirstChild("Humanoid")
    if humanoid then
        humanoid.Health = 0
    end
end)

:Connect() wires a function to an event. Player touches a part, character dies, button clicked — all events.

Services

Roblox organizes its API into services. The ones you'll use daily:

local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")

Learn these three and you can build most games.

Patterns that matter

Player joins

local Players = game:GetService("Players")

Players.PlayerAdded:Connect(function(player)
    player.CharacterAdded:Connect(function(character)
        local humanoid = character:WaitForChild("Humanoid")
        humanoid.Died:Connect(function()
            -- handle death
        end)
    end)
end)

Create a part from code

local part = Instance.new("Part")
part.Size = Vector3.new(10, 1, 10)
part.Position = Vector3.new(0, 5, 0)
part.Anchored = true
part.Parent = workspace

Client-server communication

Server:

local event = Instance.new("RemoteEvent")
event.Name = "DamageEvent"
event.Parent = game.ReplicatedStorage

event.OnServerEvent:Connect(function(player, targetName)
    -- validate and apply damage
end)

Client:

local event = game.ReplicatedStorage:WaitForChild("DamageEvent")
event:FireServer("Zombie1")

Never trust the client. Always validate on the server.

Debugging

• print() sends text to the Output window
• Red errors crash the script. Fix them first.
• Yellow warnings are informational. Address them second.
• Breakpoints (click the line number margin) let you pause execution and inspect variables

The shortcut

Understanding Luau makes you a better developer. But you don't have to write every line by hand.

Rebirth generates production-quality Luau scripts from English descriptions and executes them directly in your Studio. When you understand the fundamentals from this tutorial, you can read what the AI writes, catch mistakes, and guide it toward better results.

Knowledge of Luau plus AI assistance is a force multiplier. Learn the basics. Let AI handle the volume.