Rowling first introduces Ron with his family in Harry Potter and the Philosopher's Stone.
Harry is lost at King's Cross railway station and the Weasleys guide him through the barrier of Platform 9¾ into the wizarding world.
Giant spiders nearly devour the two of them, but the Weasley Ford Anglia returns from the Forbidden Forest and rescues the pair.
Ron and Harry then discover the entrance into the Chamber, and enter it in the hopes of saving Ginny Weasley, Ron's sister, who had been kidnapped and kept in the Chamber.
Ron and Harry share a compartment on the Hogwarts Express, and they begin their friendship: Ron is fascinated with the famous Harry, and Harry is fascinated with the ordinary Ron.
Ron plays a vital part in the quest to save the Philosopher's Stone.They eventually make up when Hermione has a nervous breakdown brought by taking too many classes and distress at the fate of the hippogriff Buckbeak.