Terry Ritchie's
Task 7 Gets you started in Graphics. Learn to draw or doodle with lines, boxes (fancy line command), circles, points (pset) then later you can insert images in place of boxes or circles and draw things on side for advanced graphics.
You should get a circle fill routine because QB64 doesn't have one but you could draw a bunch of circles in loop getting smaller or bigger to fill a circle for quick fix. Or make a SUB that does that you can copy/paste into your early graphics practice programs. Do you know how to make a SUB? = Task 8
And later a triangle fill routine would be very handy.
But first things first, how to setup a graphics screen!
Use the modern tool:
I like 1024 Width and 672 Height for fastest graphics (1024 or less, something Terry discovered) and 42 lines for Locate and Print commands until you get use to _PrintString (Xpixel, Ypixel), Text$ (which allows printing anywhere with x, y being top, left pixel start of text$). Sure to fit anyone else screen, my laptop has a limit of under 750 pixels saving room for title bar.
The 32 gives you full access to Millions of colors and transparencies see _RGB32(red, green, blue, alpha) for setting colors for lines circles and printing.
The old way was SCREEN N, with N being a number from 0 to 13 or so... blah old!
This old way you have certain sized screen with certain palettes restrictions, fine for old days but new way is better!