Select a drawing tool from the drop-down box: a line, a pencil, a rectangle or a circle;
When you select either the line or the pencil tool you'll be able to pick a line width from a sub-menu. If you don't make a selection the line is se at a default of 2 pixels;
When you select the Text tool you'll be able to write your text in the appropriate box, pick a font and a font size. Simply proceed to pick a color and click into the drawing board;
Select a color from the drop-down box: black, red, blue, green, orange, yellow;
Press the left-mouse button inside the canvas, keep it pressed while drawing. Release the mouse button each time you start on a new line or shape;
Click the link at the top to erase all content from the canavas;
Click the eraser to delete just bits of content from the canvas: just use the mouse the same way as the pencil tool. Make sure to click the deselect eraser tool before starting drawing again.
Select eraser
Deselect eraser