I read a book about this by Strauss, it was interesting - some stuff I've seen in RL before and it kinda 'worked' (those guys probably did it just by intuition though) - but as others have said, it can be seen as manipulation and may end up badly too...
for someone completely clueless, some stuff perhaps can be helpful, the 'negging' can also be just playful banter, just teasing and joking - humor is usually welcome, if not overdone
Coyote could possibly write his own book about this lol!
The big problem is the men in PUA program may start seeing women as just 'objects' and 'numbers', and bury the real self under 'techniques' - so you don't know if she likes you for you or for the techniques? Respect for women (withut idealizing them too much) is very important, I'd like to see programs teach THAT!