My bf(M23) is planning to start nail press on business and we don't know where to start.

My boyfriend is planning to start a press-on nail business, and we're currently trying to figure out where to get good quality raw materials. He's completely new to this and I don't know much about this so I need help.

We have been watching so many yt videos and we got a vague idea but any advice for someone starting a press-on nail business like must have materials/equipments and also where to buy them.