I know some university students studying JAVA as OOP according to the syllabus. Previously they learned C and C++ as well. I want to show them the path of C# as it is not in their syllabus. But if I suggest a 500-paged book, very few are going to read it. And if I go with some JAVA-C# comparison, may be they will not get many of the points as they are not experienced JAVA programmers. So, I think I need a short C# intro book(preferably free) or tutorial contrasting JAVA and C# suitable for newbies.
What do you suggest?