information available, but not analyzed

if a girl look at porn films, 

there is a lot of technical sex stuff to learn, 

but there could be a lot of stuff, 

that's valuable to learn which is visible, 

but maybe not understood by the female viewer, 

a girl might look at porn and think the sex looks cool and exciting, 

but she might not know which of the sex that feels good 

and there might be a lot of stuff that is not visible in porn films, 

such as what porn actors do and prepare between scenes