You can buy them separately. Deng Qitong compiled a set of Chinese studies books, published by Nanjing University Press. The characters are relatively large, and each character has pinyin. They are available on Dangdang and Amazon. After reading the Four Books, read the Five Classics. Use the method of reciting by heart. Read each chapter four or five hundred times, and you will be able to recite it fluently. Read "The Analects" first, then "Mencius". Read first and then understand. To understand the meaning of the article, read "The Analects" and "Mencius" translated and annotated by Yang Bojun.

Take it step by step. With the foundation of the Four Books, it will be easy to read the Five Classics.