Hello.
Rather novel, but I started learning to sign from an international Deaf community in VR.
I've been learning American Sign Language for about half a year, since it's used by the community more, but now I'm learning BSL since I'm British.
VR isn't perfect because there isn't full finger/facial/body/lip tracking, so it shouldn't be the primary place to learn from, but it's nice for making friends and practicing.