No, A Game of Thrones (the book) is not difficult to read in any kind of way and shouldn't take you very long to read. It's not very "deep" in any kind of way; it's mostly pulp. It took me slightly less than a month to read because at the time I was in my teens and wasn't used to eight hundred-page books. It's still really fun, however, and light, so I think you'd enjoy it. The series gets dull and overwritten after book three, however. Still worth reading the first few.