Hello! Student Esthetician here. How can a beginner in Esthetics increase their knowledge on faci...

Hello! Student Esthetician here. How can a beginner in Esthetics increase their knowledge on facial machines in order to have a solid understanding of what the machine does and how it benefits the skin? Are the communities one can join that keeps you in the know of foundational machines and newly emerging machines as an esthetician? Thank you so much!