Issues left open at the end of Volume 1 of Knausgaard's My Struggle

A few open issues at the conclusion of volume 1, A Death in the Family, of Karl Ove Knausgaard's 6-volume My Struggle: So why did KOK cry so profusely as he's preparing for his father's funeral and cleaning that house that his father befouled and nearly destroyed in his last years of alcoholic stupor? I can make a few guesses, most likely his sorrow for the relationship that was never there rather than for the loss of a relationship that was meaningful, but would expect narrator KOK to have his own analysis and insight. How significant is the late-discovered alcoholism of his grandmother? I picked up on the dangerous attraction, far beyond the norm, that alcohol holds for the young KOK, and he may gradually come realize that he is bound by a genetic curse that he will have to consciously and deliberately confront it he's to become a great writer (which I think he has done). Why is his father's corpse so bloody? Did grandma withhold some key facts about the father's death - perhaps in a brawl or accident? And what about the relationships with women? Most of volume one concerns relationships with father and brother and high-school pals. We know very little about his relationship with his mother or with his two wives. These will obviously be topics for further exploration in later volumes. So many great things in volume one, though, and so much promise. I feel a little disappointment at its rather abrupt conclusion, with KOK's realization that a corpse is just another object in the world, no different from a brick or an ashtray, which frees him of fears of being haunted by his father's ghost (btw, what's with all the sleepwalking in the family, which KOK describes as just a normal eccentricity but seems to me far more significant and indicative of a great deal of stress and trauma?) are groundless, enabling him to move on toward the funeral service - which we don't get to see, at least not right away.