From what I know by lurking, just try to follow general rules... don't be rude, respect other people's requests (such as don't bump when asked not to), don't beg for rep, and try to be on topic under forum posts. Also make sure to upvote as thanks for people's work and help!!! Welcome, by the way ( ˶ˆᗜˆ˵ ) ✿
Honestly your best friend will be YouTube, and discord. I’d suggest joining avatar creator discords bc sometimes they post helpful tips and tricks. For now I have the link to the YouTube creator that has helped me do unity edits.
https://youtube.com/@lucindabeskins?si=MdcIgr8gehvVo7m5
For blender, you can look at these videos.
(How to sculpt in blender) https://youtu.be/-bbuyh00hbQ?is=lItPk7FhhXX0Zshp
(How to make seamless neck merge) https://youtu.be/ACnApsra81E?is=Jscmbz0fV8lkllNk
And then I have this creator who I assume has been everyone’s go to for over the past two years that’s helped many people get into avatar creation. I advise you follow along with her tutorial, even if it is 2 years old, it shouldn’t be too different when you use the updated blender.
https://youtube.com/@askamberofficial?si=6TC6o43Qz9lUrPHx
In the end, you can always ask for help in Google or ask around in discord servers. Or even ask me
