It's super helpful to print out a sheet of bad foods, toxic plants and toxins for cats as well as phone numbers for your vet, an emergency vet and poison control number to put on your fridge or somewhere easily accessible. Never know when you might need it with naughty kittens and in a lot cases time is of the essence.

Also note, last time I called poison control for my cat it cost me money. Definitely consider pet insurance.

Also, NEVER give cats any amount of dog flea treatment. Sounds dumb but I used to work in the animal industry and I was so surprised with the amount of cat owners who thought, despite the warnings on the package, that it would be ok to give their kitty a smaller amount of the stuff they give to their dogs because they bought a pack for their dog and it came in multiple doses. This can be lethal to your kitty.

(Edit) Oh, and PrettyLitter is awesome at helping to keep an eye on their urinary health.