Thank you. In Book 10, Odysseus and his crew sail to the home of Aeolus, Master of the Winds. They stay there for a month, and Aeolus gives them a pouch of wind that would have blown their ship off course. They get back to sailing, and within ten days, they're so close to Ithaca, they can see it. However, as Odysseus sleeps...
One of his crew members opens the pouch, blowing them all off course again. Having run out of good wind, Odysseus and his men are forced to row the ship, reaching a land inhabited by giant cannibals, the Lastragonians. After spearing and eating a bunch more of his men, Odysseus and his remaining crew escape, landing at Aeaea, where they encounter Circe, a nymph, a lesser god with superhuman powers. She feeds a potion to a bunch of his men, turning them into pigs. Odysseus calls on Hermes for help.
Hermes explains that he'll need to find a plant that can counteract the potion, and how to overpower Circe. Odysseus finds and does both of these things, making Circe swear an oath not to hurt him or his men anymore. The men grow complacent, staying there for a year, eating and drinking.
In fact, one of the men, Alpenor, gets really drunk and falls off a roof, killing himself. Circe tells Odysseus that he needs to go find the land of the dead, where he can meet up and speak with Tiresias. In Book 10, we see more themes involving Odysseus'problems with judgment. It's a major flaw of his, not just sending his men out to get killed by cannibals, but also when he lets his men open the pouch of winds because he wasn't guarding it closely enough.
Also, Hermes had explained to him to evade Circe, but he gave in to temptation, sleeping with her and staying there for over a year. With the death of Alpenor, we see that there are codes of hospitality that don't just apply to life, but to death. Odysseus has an obligation as a leader to provide a proper burial for his men.