I'm new. What do I do?

General
1

I don’t know how to code this stuff

2

Start by trying to get a circle to draw on the screen. (You could use ellipse(WIDTH/2, HEIGHT/2, 100) in the draw() function)

Then try changing its colour and outline.

Then try making it move under your finger.

3

@Zade Here’s a simple example. Slide your finger around the screen to move the circle. Try changing the starting x,y or background or fill or ellipse numbers to see what happens. Look thru the built in reference or the forum examples to see everything that you’ll be able to do. Plus ask questions, that’s what the forum is all about. It takes time to learn all of this.

displayMode(FULLSCREEN) -- shows full screen

function setup()     -- this gets called once at startup
    x=200   -- starting x position
    y=300   -- starting y position
end

function draw()      -- this gets called 60 times per second
    background(40, 40, 50)  -- set background color
    fill(255,0,0)       -- set ellipse color 
    ellipse(x,y,100)    -- ellipse x,y position and size
end

function touched(t)      -- this gets called when something touches the screen
    x=t.x   -- your finger x screen position
    y=t.y   -- your finger y screen position  
end
4

I started by reading the documentation, and modifying the examples i found within