I have learned a huge amount on this site - esp. about breeding. I haven't bred a litter yet - but I feel much much better prepared having read so much great advice from very experienced breeders.
The site is fairly robust - so if you think it's OK to whelp $#*!es outside or to mate dogs without the appropriate forethought and health checks then this is not the site for you.
Of all the dog sites I frequent - this one is the best.