>I'm about to buy a set of video tapes with Visual FoxPro
>6.x from KeyStone Learning System. Dis anybody used these
>tapes for training? If yes, please tell me about the quality
>of it.
>Thank you.

I do not have any knowledge of the quality of those tapes. But before you buy anything, also see:

AppDev [videos by Jim Booth]
Classx [videos by Ken Levy]

There may others as well. Click on the Globe in the upper left frame to links to other VFP resources.