You might want to start with www.mvps.org/msaccess, it's a great site.
There's also msdn.microsoft.com, of course, and a lot of the posters here
maintain sites with wonderful info. (Not me -- too lazy <g>)
HTH
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Rebecca Riordan, MVP
Designing Relational Database Systems
Microsoft SQL Server 2000 Programming Step by Step
Microsoft ADO.NET Step by Step