SSIS - basics for beginners
JumpStartTV from Brian Knight (SQL Server MVP) has started good sessions and one of them are very useful to the beginners in SSIS, the basics of the SQL Server Integration Services Control Flow. He shows you how to orchestrate a package in the control flow with precedence constraints and how they relate tasks together in the control flow and how to tasks are executed and in what order. He also shows some of the advanced properties of the control flow that help with parallelism.
View here.
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SSIS Guided Tour Video's
One of the biggest changes between SQL Server 2000 and 2005 is the change from Data Transformation Services (DTS) to SQL Server Integration Services (SSIS) as SSIS is not simply an upgrade to DTS but an entirely new ETL tool. The following guided tour videos of SSIS provide a great introduction to SSIS. The video's can be found here.