Chapter 9 opens with yet another identity conflict, this one having to do with the family tree of Saul. Here we see the claim that Kish was the son of Abiel, but in 1Chronicles, we are twice told that Kish is the son of Ner. So which is it? Well, despite the fact that being told twice in 1Chronicles might lead you to go with the majority statement, reading elsewhere seems to suggest this minority reading is the correct one. Various other passages tell us that Ner is in fact Kish's uncle, suggesting that the passage in 1Chronicles is some sort of scribal error, and one that only appears twice because, as the SAB points out, for some reason the extended passage that it appears within is inexplicably written twice. We've seen this sort of discrepancy before, and we'll probably see it again, I expect. [Edit to add: See the comments for a suggestion that may resolve this problem; Kish may be the offspring of a Levirate marriage.]
So we are introduced to Saul who is apparently tall and handsome, which for some reason, the SAB finds absurd. I don't know what should be absurd about this. It's actually an important aspect of the story, I believe, because when the people get introduced to Saul, they will immediately say of a tall, good-looking guy, "Wow, that guy looks like a king!" The overarching lesson of the story of Saul is that people tend to prefer to look good than to be good, and that goes for their choice in politicians as well.
Right after introducing Saul as a physically impressive person, we are given a story about Saul in which we see perhaps a suggestion of his shortcomings. He's been sent out to find some donkeys, and he has no luck finding them, so he decides to give up. His servant tells him that they are near the home of Samuel, and Saul seems to know nothing about Samuel, not even recognizing him for who he is when he runs into him in the street. Samuel recognizes Saul is the new king-to-be, and invites him to his house to eat. Later, before sending him away, he has a few personal moments with Saul that we are told little about here.