Hello,
I visited Salamanca 20 years ago so I do not remember it that well (excepted for the old town that was nice), especially since it was a trip including several cities. While you are there, do a trip to Sevilla which is really a beautiful city
I am not sure what information you are looking for. If it is about restaurants/pubs in London, Paris etc I can help
Morocco: be ready to discuss about the prices, including with the taxis. Take tablets against upset stomach.
Coming from the US, be sure to have power plug adaptors etc since it is usually 220-240V/50Hz in Europe. The socket is usually the same but they can be different (like in the UK and also in some old houses in Italy per example).
Olly