Reading material

Having only recently started using Axapta I was wondering if anybody could recommend any books starting with the basics through to more advanced operations.

Thanks in advance

you can find some info here: http://www.microsoft.com/Businesssolutions/Community/NewsGroups/dgbrowser/en-us/default.mspx?dg=microsoft.public.axapta.programming&tid=9cfab242-4567-42de-8394-8ae9c9863f1d&lang=en&cr=US&p=1