I'm new, and I have questions, damnit.

[Avital Oliver/biOmass <biomass@hempseed.com>]

a) What the estimate on the number of Lojban speakers worldwide?
b) Some technical questions:

How would I say, "Does anyone talk?"
[mainly, the anyone is my problem]

How would I say, "Who talks to himself?"
I'd think it's `mi tavla mi', but according to the lessons, that would
be, "Who talks, and to whom?"

I think that's it for now.
[BTW: Is the book worth buying? I mean, are the lessons on lojban.org
enough?]