My problem is that I don't know what I don't know.

My husband handles almost everything related to our house, so that works mostly fine as is, but I'm pretty oblivious to most of it and if something happened, I'm not sure I'd even know where to start with figuring out what I should be doing.

I suppose I should make him write up a bunch of notes - our furnace is ABC model, it requires DEF filters to be replaced every X months. If it needs servicing, call XYZ company. That would help, but I'm not even sure I know all the things I'd want those details on.