1. Potty training, one effecive way is to put him in a small create, and let him go out for potty every 4 hours for the first seveal months.
2. Food intake: buy dry puppy food only, make sure just stick with one brand, do not change another brand suddenly. If you need to change to another brand, begin with half old food and half new food, then evently replace the old one and according to the instructions on the bag.
3. Water, do not give him too much water in the beginning, since their bladder is samll sot that they can't control very well.
4. Start with leash training, eat behavior training, no up and jump training, walk training as earlier as you can.
5. You need to be a pack leader, otherwise he will be yours.
6. Buy some toy for him and spend time with him.
Good luck!