What does Sri Hanuman teach us?
Hanuman teaches us how to be brave and strong like him
Hanuman is the monkey God. He is the God of strength. He is very strong and clever. He can lift mountains. Sometimes Hanuman can be a bit naughty. Hindu children love to listen to the stories of Hanuman. It makes them want to be strong and courageous like him. It makes them want to do God's work and of course be a little naughty like him.
Reference: Primary Hinduism by Seeta Lakhani (Ch.2, 'Thinking About God', p.24)