Recently, Microsoft released a free planning guide for server farms and environments using Microsoft SharePoint Server 2010. The guide is designed for companies in the planning phase of deploying SharePoint Server 2010 and includes information about authentication and business continuity management.

You may also be interested in a free ebook chapter from “Microsoft SharePoint 2010 Administrator’s Pocket Consultant” by William R. Stanek and Ben Curry. The chapter focuses on configuring core operations, including system settings, database management, and sent to connection. Simply sign up to access the chapter and other free “Spring Cleaning” resources. 

Depending on the depth of information you’re seeking, numerous free Learning Snacks are available for SharePoint Server. For more specific information, check out online training with many courses priced under $50.