All documentation about programming .vfp. mtdlls will be helpful. This includes .vfp. web services since they use a lot of the same technology.
Here are some useful links:
http://www.activevfp.com/dna08.htm
http://www.west-wind.com/presentations/aspobjects/ASPObjects.htm
http://www.activevfp.com/AVFPdemo2r/docs.htm
a lot of stuff on .vfp. web services on the Microsoft site...

>Are there any other place or a book to find more information about activevfp?
>This seems to be a good alternative for programming the web and I'd like to find more material about it.