Avoid making him feel unwelcome. In the beginning sometimes you need to bite your tongue a little and just let them spew their stuff and LET IT GO. After a while it's no fun to argue with someone that will not argue.
But he is in your house what a great start.
Take care and try not to sweat the small stuff. He has had it easy with you sending him money. Worrying about money is new to him. Husband
And if I claim to be a wise man, well It surely means that I don't know