Make gradient shading follow curves on shapes.
Create music album and poster type artistic patterns.
Mechanical gear shapes can be created easily in Inkscape. This tutorial will show you how, and give you an idea on applying filters to make the finished design look old and worn.
Link to Inkscape Filter Guide:
Learn fundamental skills for text manipulation. Make text wavy or make it go in a circle.
Use shadowing and lighting to give the illusion of a 3D floating ball.
Take a photo and give it a shadowed polaroid affect, and pin it with a little red tack.
Make a visual intersection of the primary colors of light.
Bend, stretch, and mold your text into different shapes.
Combine elipses to create the outline of a bowling pin, then use gradients to create the shadowing effect for that new object.
A good explanation on snapping(connecting) nodes is also introduced in this tutorial.
See how to create patterned trims around any path, and learn the paisley design.
The red tear drop outline (path) can be seen by pressing the button "Show path outline" in the top right of the window.