Serpentine Belt Broke and Oil leak! Please Advice and Help

[jodemerson]

Hello,
I have a 2002 Boxster S,
I started up after church and about 15 miles down the road on my way home I start hearing a bit of screeching. I didn’t think much of it until I hear pieces of something coming off the car. The serpentine belt shredded and came off. I lost power steering and cooling. The engine overheated and I pulled off on the next exit.
There was oil leaking underneath but I couldn’t identify where it was coming from exactly. I accessed the engine from behind the seats and confirmed my suspicions of the broken belt. About a 1/2 hour later I started it up again and a lot of smoke came out the exhaust (meaning oil in the cylinders I believe) so I shut it off quickly. A few questions and any advice welcome.
Where would the oil leaking from?
Do I have other worries of driving about 2 miles with the belt broken?
Should the engine overheating concern me?
Any estimates or recommendations on parts to get or replace or check?