You will need to give your dog fresh water every couple of hours.
Also, you should give it some fresh food in the morning and again in the night.
Walk your dog 3 to 5 times a day for about 10 to 15 minutes, not to long because your dog will get tired (and very cold/hot depending on the weather)
If you have some, put pet jackets, sweaters, shirts (etc.) on your dog before when you take it outside. (when it is very cold/hot...)
Play with your dog! They love to play.. (Outside and inside.)
Love your dog, it will love you back!
Make sure you give your dog treats now and then, if you want to train it, you should give them it when they are doing the right thing/trick.
Don't over feed your dog.
Remember, dogs live for about to 12 years.. some grow very older.
* * * * * * If I missed anything tell me :3