For even more great articles, they have a subscription service.  For example, there's a killer article called: Integrate with Partner SharePoint Portal Server Sites

Free articles from http://mssharepoint.advisorguide.com/

1) Top 10 SharePoint Myths

Improve your SharePoint project's chances of success by dispelling these common SharePoint myths.

2) Integrate Business Processes with Microsoft Office Systems

Information workers can use Microsoft Office to access and interact with business applications and create more fluid processes

3) Prepare for Downtime

Downtime can cause huge losses for any organization. Find out how to identify your most critical servers, and some guidelines for determining the potential costs of downtime.