Answer 1

You can learn C# as you are learning Unity. I recently took a Unity class at a community college and only 4 of us in the class had C# experience, and some didn't have any programming experience. The book we used, while not the best did explain things fairly well. We used this book https://www.amazon.com/Learning-Developing-Games-Unity-Beginners/dp/1849696586/ref=sr_1_2?ie=UTF8&qid=1490464964&sr=8-2&keywords=learning+c+by+developing+games+with+unity