Yay for new family members!!
Litter box training: Cats are creatures of habit, the earlier you can catch bad habits or enforce good ones, the smoother things will run. When cats go to the bathroom, it is their instinct to keep returning to that spot (triggered by smell). You can use this to your advantage by one of two ways. 1) (preferable.. obviously, lol) Once you bring kitty home, watch them like a hawk for that first moment when they start digging/squatting to go to the bathroom and try to run them to the litter box (if they’ve gotta go then they’ve gotta go! lol). 2) If you don’t “catch” them in time and it is #2, (sorry this part may be gross), but instead of throwing it out, move it into the litterbox and show/make sure your kitty smells the new bathroom area. Never had a cat that took more than a day of litter training by doing one of those methods.
Training in general: Cats don’t really respond to yelling in the sense dogs would, I would recommend what others have suggested, a water bottle. That way they grow to fear an ‘object’ and not their actual owner. Again, try to mold habits early. For scratching.. try rubbing some catnip on a scratch pad.. mine always took to this but some cats don’t prefer catnip. And squirt them when they scratch furniture and what not.
Consistency: It is important to keep them on a consistent diet (same brand/type.. especially dry food) and not switch things up without a gradual change over (to accomodate their digestive tracts). I feel like switching litter isn’t as crucial, and depends really on the individual cat. Mine could care less as long as she gets to play it in to her heart’s content (thus why I had to get a fully enclosed litterbox… she THROWS that stuff everywhere).. I’ve even watched her go into the litterbox and play around in the stuff without actually going to the bathroom, lol!
Food: Vets typically recommend a mix of wet (half a can) and dry food daily.. but I feel like it’s more important to get enough dry food than wet (too much wet food without enough dry can be terrible for their teeth). The wet food provides them with extra protein and helps keep them hydrated, but they need the dry food as well for good teeth/gums health and other supplemental nutrients. Also important, as mentioned earlier, diet is not something you want to cut corners with. Get the brandname stuff.. Iams, Purina, etc.. not the storebrand stuff, it’s tremendously beneficial in the long run for overall health of the kitty.
Other random stuff I’m thinking about: PLEASE get your cat spayed/neutered. Aside from the arguement I’m sure you’ve heard of the overpopulation of cats and dogs.. having them fixed can help prevent a lot of bad habits they could develop (males spraying, etc) and even quite a few illnesses they can aquire (even cancers). Cat toys- I’ve tried buying things for my cat.. but she always goes back to curling ribbon, hair ties, and grocery bags! Just depends on the cat I guess.. Also, socialize your cat early on, whatever he/she may be exposed to later in life.. it’s easier for them to adjust early on. So if you always have people coming in and out, let the kitty meet a lot of people early on, or if you will be around kids a lot, let him/her get exposure with kids, if you want to be able to clip their claws.. pet their paws a lot (not just during clipping) to get them used to it. Just makes adjustments easier down the road. Rockstar33 brought up a good point, cats are very good at hiding what’s wrong, and usually by the time you notice something… things have progressed to a very bad point. So the better you know your cat’s personality the sooner you can know when to get your cat to a vet, etc.
Okay! I’m sorry I did not mean this post to go ON for so long, ha. Hoped this helped though and GOOD LUCK with the adoption!!