OLAP/SSAS for Beginners

Hi Experts,
Can you recommend a good websites, articles or free e-book that I can use to learn about the basic of OLAP or Analysis Services by SQL Server 2000/2005? I've been using SQL Server but this time my new role as report developer requires me to learn about OLAP or Analysis Services.
Thanks in advance for any help.
Regards,
Joel

http://www.kimballgroup.com/
above is a good site to start with datawarehousing concepts and then some microsoft published books on SSAS 2005. Analysis services 2000 and 2005 has huge difference in accomplishing cube task, so I would say to go with 2005 which is much simpler.

Apart from what Ranjit has mentioned , Microsoft has provided best resources in the form of Virtual Lab. try that to learn about any MS product
http://technet.microsoft.com/en-us/bb499681.aspx
Madhu

Thanks Ranjit and Madhu for a quick response. []