I think Kendal covered most of it!
With the going outside, she's right you kind of have to anticipate it at first & put your pup outside when you think he will need to go... If he does have an accident inside still put him outside & tell him wee wee or whatever command you want to teach, just so that he knows that's where he should do it
With the biting, if the yelping doesn't work, try turning your back & ignorig (but obviously the teeth hurt!) so if that stil doesn't work find a place where you can put him alone for punishment so that he knows he has been naughty...
We use the kitchen, so now if we say 'Izzie do you want to go in the kitchen?' She generally kows what we mean & stops
But it does take time! So persevere
Good luck! & yes colour, name, type of corss & pictures please?!