Well I vacuumed like a champ first! Unfortunately my apartment is fully carpeted but my BF's house is all hardwood which is better for accidents. I bought an ex-pen which I use during the day for him to play in but when I'm home with him I use it as a gate so he can't get into any cords or behind the couch
I also have his crate set up in the corner of the room with it opened and his bed in it so he gets used to it and can go in an out as he likes and a pee pad in the kitchen and also by the door. I'm potty training him to go outside but those are just for precaution
I also put baby-proof outlet plugs in each of the outlets only because I'm completely paranoid haha.