Hinduism is a sacred religion. Its basis is sacred scripture, whose number is very high but three texts are very famous. Which have their own importance. These three texts are Ramayana, Mahabharata and Gita. These three texts teach many ways in Hinduism. Which we use in our life so that we can express our life. We cannot elaborate on all three texts. But a person gets education from Ramayana in life, what to do in life, what should not be done in life from Mahabharata and from Bhagavad Gita, one gets to teach how a person should live life.
In Ramayana, a person gets to learn about his karma so that a person knows the moral work done by Sri Rama. If it is said in one word, Ramayana teaches morality about how we should do karma.
In the Mahabharata, one gets the education of what the result of leaving morality is. No person should commit immoral act. If it is said in one word, Mahabharata teaches us not to do immorality and words should be thoughtfully spoken, because speaking immoral words is also equivalent to leaving the hand of morality.
In the Bhagavad Gita, a person gets to know himself, that is, who I am. I have a relationship with God. If this is said in one word, you get to know yourself from the Gita.