On the Developer Tutorials website, there's a new guide that steps you through the installation of a simple e-commerce platform available for free from Devellion Limited.

In this tutorial, we will get an introduction to CubeCart, created and distributed by Devellion Limited. Their flagship product is one of the easiest low-cost e-commerce solutions available, and is growing in popularity. Note that CubeCart is not technically open source, since the code cannot be freely redistributed. On the other hand, most of the code is not protected using encoding, and can thus be read and understood.

They go through the selection process - picking which version of their software is right for you - and the installation, configuration and how to verify that everything's up and running smoothly. Screenshots are included to help along the way.