How can I make Guis fade from Transparent To Non-Transparent?

Im making a 2d platformer and for my intro cutscene i would like some guis such as my play button gui to fade onto screen. I dont know anything about this idea accept the fact that you probably will have to use TweenService. Any help would be Greatly Appreciated. Thanks!

Tweenservice what you would have to use

here is an example

local TweenService = game:GetService("TweenService")
 
 
local goal = {} 
goal.Transparency = 0  -- this is the property we want to affect, and we give the value we want it to have

 
local tweenInfo = TweenInfo.new(2) -- first paramater is how long the tween has to be in seconds
 
local tween = TweenService:Create(playButton, tweenInfo, goal)
 
tween:Play()

Here you can find more information about tweenservice