For all the problems, chaos and grief from the pitch, FC Barcelona's season has started quite well on the green, green grass at Camp Nou. Blaugrana welcomed Real Sociedad to their church last weekend, and while others smelled of blood and vulnerability, the hosts stood firm. Ronald Koeman's men excelled in a 4-2 victory over the guests, and they were largely comfortable for a full 90 minutes. Barça's tour of killing Basque clubs is not over yet, as they travel to the Stadio San Mames to face Real Sociedad's bitter rivals,…