Make sure you see the edges at 100%. Then click & drag out your canvas from the side/ corner squares...
Use the Zoom tool – click and drag out the area to magnify.
Use the slider (bottom right of the canvas).
The main drawing tools are:
You can choose a different/specific color.
You can change the line thickness or size of the Pencil, Brush or Shape outline.
Click and drag out to draw a shape. You may just see a dotted outline.
If you do, don’t click off, just go to Outline>Solid color, then click off it.
Before you click off your shape, you can change the Outline, Fill or Size.
Select with the Select tool (click and drag around it) – can use the rectangular or free-form option. Then can move it by clicking and dragging the selection (when see 4-pointed arrow).
Use the Select drop-down menu to select "Transparent" - it'll keep the background color transparent.