The SharePoint Learning Kit was released a few months back via CodePlex and is an e-learning delivery and tracking application built in WSS 3.0.

In an excerpt from the product page:

This is exactly what I need. I love technical posters and Kirk Stark from the SharePoint User Assistance team satisfied cravings by creating posters that shows the parameters of SharePoint Stsadm. He created one for Microsoft Office SharePoint Server 2007 and Windows SharePoint Services 3.0

Microsoft has released a couple of weeks ago the SharePoint Administration Toolkit which gives the ability to perform bulk operations on site collections and update alert emails whenever web apps change URLs.

As described on the Microsoft download page:

WSS is short for Windows SharePoint Services and is a free component of Microsoft Windows Server 2003. WSS is also provided as a free download here.

WSS is a great starter SharePoint component you can use for information and documents management as well as a team collaboration tool.