I'm not a fan of online literature. I'm just a person who likes to read novels. I can't give reading recommendations for specific age groups. However, if you want to find books suitable for first and second graders, you can consider the following options: Picture books: Picture books usually have simple and easy-to-understand language and vivid illustrations suitable for children to read. Some famous picture books included The Little Prince and Hans Christian Andersen's Fairy Tales. Fairy tales: Fairy tales are one of the most popular types of reading for children. Many fairy tales contain interesting plots, characters, and topics that can help children develop morals and values. For example, Cinderella and Little Red Riding Hood. 3. Pinyin reading material: Pinyin reading material is a kind of reading material marked with Pinyin characters, usually containing simple Pinyin and word explanations, suitable for young children to read. Some of the famous Pinyin reading materials included "Pinyin Reading Materials" and "Little Prince's Pinyin". 4. Science books: Science books usually contain interesting scientific knowledge and explanations suitable for children to read to help them understand the world. Some famous popular science books included Encyclopedia and Animal World. Many books suitable for first and second graders depended on the child's interests and reading level. It is recommended to choose suitable reading materials according to the children's interests and reading level to help them obtain a beneficial reading experience.