How did circe help and hinder Odysseus?

Circe hinders Odysseus by first turning his men into animals and delaying Odysseus' progress. Once Odysseus manages to resist her spell (with Hermes' help), Odysseus then take her to bed for her to turn his men back into humans. For a year after, Odysseus feasts and stays with Circe, which further delays his return to Ithaca. When Odysseus and his men feel it is time to leave, Circe helps Odysseus by advising him to visit the prophet Teiresias in the Underworld. There he learns of the dangers ahead of Scylla, Charybdis, the Sirens, and HeliOS' cattle.