Also how does the membership work?

Yes.

However, you'll need a SAG (Screen Actor's Guild) card, or other performers union card. If you can show them that you are an actor/performer and can prove that you actively participate in theater/performance... they will grant you a card.

If you're just a 'consumer' who wants to get deals, you may be able to schmooze the salesperson - but they try to keep the cards exclusive.

no. you have to show proof you are in makeup school or a cosmetologist