The second thing you'll probably want to do is let the dog outside for a potty. I'll cover this in more detail in the Housebreaking section, but especially in the beginning, it's important to take the dog out frequently (as in every hour on the hour, if not more often), let him sniff around for as long as he needs, and always be ready to reward heavily for pottying outside. It may take a while. Many dogs won't pee when they're nervous, and it's not unheard of for newly arrived fosters to hold it for 24 hours or more. You can't force your dog to pee; all you can do is give him lots of chances, lots of time, and lots of patience.

The second thing you'll probably want to do is let the dog outside for a potty. I'll cover this in more detail in the Housebreaking section, but especially in the beginning, it's important to take the dog out frequently (as in every hour on the hour, if not more often), let him sniff around for as long as he needs, and always be ready to reward heavily for pottying outside. It may take a while. Many dogs won't pee when they're nervous, and it's not unheard of for newly arrived fosters to hold it for 24 hours or more. You can't force your dog to pee; all you can do is give him lots of chances, lots of time, and lots of patience.