In the United States, each state sets its own laws on inheritance. There are currently fifty-two different sets of laws on inheritance. Fifty states, the District of Columbia, and the Territory of Puerto Rico. I live in Massachusetts where my spouse gets it all, no spouse - then to our children, no children - Commonwealth of Massachusetts. A small notebook is in the file folder with my will. In it is any special instructions, websites, account numbers, passwords, security words, etc. Every time I make a change it is entered in the notebook. On our birthdays we review the notebook and the will.
Slainte