a daytimer that has a journal, address book, pockets...they are the best.
you only have 1 thing to find. they are a little bigger than most, like a binder size. they have them set up to either see a day or a week at a glance. lots of room to jot down daily notes. i go back and look at ones from years past to help me remember stuff.
the pockets can hold the bills and reciepts. the day you get a bill, open it up, mark the date it is due on the right day and put the bill in the one pocket.
i started using one for business and personal years ago. mine is made by franklin covey. i get refils every year.
i do use my computer a lot. but having a home office...that i end up having to bring stuff to the actually business sometimes...this keeps it all in one place.
i totally understand about about you and bill. my folks have been married for 56 years. with dad not able to do the finances like he used to, mom had to learn it all.
ps...i'm writing down some of the hints and tricks you are getting.