would you recommend for 1st time users?

Yes, but use with caution, make sure you are very well lubricated. I was first time user. Others are not as heavy so not as pleasurable.

what material are the balls made out of?

Metal balls cool to the touch my wife loves them exactally what metal I dont know "balls of steel I guess" LOL

Does this come with remote like off the movie ?

There wasn't a remote in the movie. After Christian inserted them he told her she should wear the silver satin dress because they'd go with the earrings he'd gotten her, which he then handed to her & made a joke about them going in her ears. There was no remote.

What s the. Correct way to use ?

first locate the muscles your using to keep them inside by pissing and stopping.... once they are cleaned insert balls and use those same muscles to keep them inside. If you don't find that muscle they will fall right out!!! it took me a couple of trys to strengthen that muscle and boy it helped in the bed room ;))))