What is New in Blender 2.83? - CG Cookie | Learn Blender, Online Tutorials and Feedback
How to paint "Through the mesh" in Weight Paint Mode (OBSOLETE - addon now availabe) - YouTube
Noob Question: Unable to Weight Paint my Mesh - Blender Stack Exchange
Can't properly weight paint inside of mouth/tongue and weight paint is picking areas I did not paint - Animation and Rigging - Blender Artists Community
Help - Weight Paint Display has stopped working.
Can't weight paint because mesh is covered (image included) - Animation and Rigging - Blender Artists Community
Top 10 weight paint tips for Blender - Artisticrender.com