Hi Fabrizio,

The course titled SQL Server 2008/R2 DBA is over 50 hours of video teaching and the cost is us$99 - url=http://www.learnitfirst.com/Course/157/SQL-Server-2008-DBA.aspx#ChapterListing][/url]. I am not affiliated with this company, but their instruction has really helped me learn and understand SQL Server. Depending on what your boss wants you to learn, there are several other courses that you can select from. But I would suggest viewing one of the free videos first to make sure it would work for you.

Good luck!