HOW TO USE - vertex weights - edit and weight paint mode ? need a good tutorial

Can anyone point me to a detailed tutorial about how to use vertex weights in both edit and weight paint mode. I can find little to nothing about this when I do a google search.

I am having trouble understanding what the layers mean and how to properly use them (see attached screenshots). I am having trouble with weight paint -
I want to be able to pain individual vertexes in a group but when I paint certain vertexes the mesh distorts / changes - or jags the vertex out - throwing the whole mesh off.


edit mode - vertex group = “bulb”


weight paint mode - vertex group = “bulb”

any help is welcome - thank you

Start here and follow along until you get a grasp of what you need to do. https://www.youtube.com/watch?v=_y8mOQBOHxA It is kind of an art as well as procedures. The objective is to get good deformations.

thank you - I am familiar with DanPro tutorials - he’s great