1997 Honda Civic leaking oil

Too often people take their cars to a mechanic for repair and fail to look at the vehicle to atleast see if they can have an idea what is wrong. The idea here is not necessarily to have you fix the problem your self but rather to have you narrow down what it might be and prevent being taken advantage of.

I don't believe you were taken advantage of in this case but a quick examination under the car could have convinced you that the problem was an oil gasket leak. If this fixed the leak I think you did well.

The radio is something you did not give enough information on. But some garages pull the battery terminals off as a standard practice and in the case of Honda radios they would need to enter a code to get the radio working again.