Not a technical book, but Art of the Start by Guy Kawasaki covers about everything else. Scaling issues will probably be platform dependent (LAMP, .NET, Python, RoR). The creators of StackExchange & StackOverflow have talked about their scaling challenges in their podcast; they could probably write a book.
I think a good book any startup founder must read is "Crossing the Chasm". I have read almost 3/4ths of the book so far and I have learnt so much and have corrected my way of thinking towards marketing a product or a product type.
Crossing the Chasm on Amazon A used or second hand book is good enough for this.
I would recommend reading Founders at Work and then Do More, Faster. They are two of the best books for any internet startup because they cover what it is like to start a business and then how to pull it off.