Shaving help.

Ok, I know this has probably been posted before, but to all the ladies who shave their lady part, I need help, so I have some questions.                           
1.) how often do you shave? If I try again to soon it hurts like hell. 😭
2.) am I shaving in the wrong direction?? Which direction should I be shaving down there?
3.) what product is ok to shave with down there? 
4.) is there a way to stop that horrible itch when the hair starts growing back?