About MS BizTalk Server 2004 onwards

BEST ONE TO START WITH :)

Understanding BizTalk Server 2004
Summary: BizTalk Server 2004, an integration server, lets you to develop, deploy, and manage integrated business processes and XML-based Web services. This version of BizTalk provides integration between messaging and orchestration and enhanced security and support for industry standards.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/BTS_2004WP/html/c245a8af-9f01-410f-b1bc-c43e725bfc27.asp

Get insights on how to use BizTalk from these technical webcasts for developers presented by knowledgeable subject matter experts.

http://msdn.microsoft.com/biztalk/community/webcasts/default.aspx

BizTalk Server adapters extend BizTalk Server to enable simple installation, deployment, and configuration of connectivity solutions. The combination of BizTalk Adapters and BizTalk Server removes the need to develop infrastructure components such as network protocol support and translation, data conversion, data transformation, and development of business process automation.

These adapters offer "no-code" connectivity solutions, reduce implementation costs, decrease risk of project failures, and lower the liability that can be associated with enterprise application integration scenarios.

Microsoft BizTalk Adapters
Microsoft provides a comprehensive list of adapters for BizTalk Server 2002 and BizTalk Server 2004 including SQL Server, Web Services, MQSeries, FTP, and SAP, to name a few

Partner BizTalk Adapters
Microsoft partners contribute greatly to the success of BizTalk Server. These partners provide a variety of application- and technology-specific adapters that support BizTalk Server 2002 and BizTalk Server 2004.

http://www.microsoft.com/biztalk/evaluation/adapter/default.mspx