Rigging is a very complex topic and every 3D software has it’s own solutions and vocabulary (bone/armature). So the only way to really understand the topic is to se for basic tuts, advanced tuts, compare other software (even is only on video) and decide which tutor or book to follow and even to pay for the knowledge. There are for example many videos in english, which i barely understand, because some of the non native english speakers are maybe understandable for the other nonenglish speaker of ther own country ans some tips are nothing else as the repeatition of the user manual.
So i’m afraid you have to learn it the hard way. The only tip i can give is: don’t bother to much and don’t follow stupid tutorials.
[And right now i notice that there are differen R’s talking ]
I found right here (okay older and i haven’t look) on BA:
]