If you want to learn Inkscape, here is a list with some great Inkscape tutorials. Inkscape is professional quality vector graphics software which runs on Windows, Mac OS X and Linux. It is used by design professionals and hobbyists worldwide, for creating a wide variety of graphics such as illustrations, icons, logos, diagrams, maps and web graphics. You can download here.

Basic Tutorial

This tutorial demonstrates the basics of using Inkscape. [read more]

Urban Design

Postage stamps with Inkscape

Learn to draw an eye in anime style

How to Create a Vector Light Bulb Icon with Inkscape

Aabstract Wallpaper

Using and Modifying Brush Strokes in Inkscape

Fun With Objects to Marker in Inkscape

Video Tutorials

Copy Shapes in a Perfect Circle

Introduction to Squares and Rectangles

https://www.youtube.com/watch?v=Ulkp5VWQYAQ