Power of Attorney

Is it a requirement to record a Power of Attorney within California?
Is it a requirement to record a Power of Attorney within California? If so, whom do I record it with?
Will a husband's wishes be followed over the adult children with the medical power of attorney?
If a women is married and she gives her medical power of attorney to her biological children, when it comes down to making life saving and treatment decisions, will the husband's wishes be followed over her adult children with the medical power of attorney?
Does a durable power-of-attorney effective upon disability expire upon the death of the grantor?
Does a durable power-of-attorney effective upon disability expire upon the death of the grantor? Do all power-of-attorney documents expire upon the death of the grantor?
What is and how do you establish a simple trust?
I would like information on establishing a simple trust and the tax and probate issues with regard to this type of trust. Maybe you could compare this trust to a LLC, even though I realize that they are different in nature.
What is required of a durable power of attorney that involves real estate transactions?
What is required of a durable power of attorney that involves real estate transactions in order to be complete? Does the power of attorney need to be registered with the county clerk's office?