Hi Paul – Do you mean that you want to learn how to rig clothing so it simulated cloth over a rigged character? Or do you want to the clothing to simply stick to the body and inherit the weights of the character rig?
The reason you don’t see many videos about simulated clothing for character rigs is because it’s very difficult and at this point, Blender doesn’t accomplish the task well. Rumor has it that new cloth sim tools are coming soon, but what we have now is more primitive than robust.
Perhaps the reason you don’t see many vids about rigging cloths to stick to the body of a character is because it’s not often a desirable effect. Clothes don’t behave that way apart from yoga pants and spandex – especially in the case of a dress, for which you would only want simulation.
Finally, can you link me to an example on youtube of the effect that you’re after? Once I know for sure, maybe I can point you in a direction.