I've got quite a bit of experience with it. A couple of others like MJ and WW have as well, I think.

First of all, any idea which version of VB you're going to learn? While not totally different, the syntax of the different VBs does change slightly - VB6 is not the same as VB 2005, which is not the same as VBScript, which is not the same as VB.net.

I'd recommend VB6, simply because it's the most widely used.