Hua Cheng Publishing House's "Poem, Style and Score" (Wang Qingkai) is suitable for beginners and easy to understand, but it is not comprehensive enough in some places, especially because only one epigraph is given. But it's enough to learn from the basics, and you can use other books when you study in depth in the future. There is also the Outline of Poetry by Tianjin People's Publishing House (Tu Zongtao), which is not bad either. When you are a little familiar, you can look at Wang Li's poems and rice. Wang called him the first person in poetic meter. His books are all about this, but they are a little rough. There is also a book, Zen but firm but gentle acacia bone, which is also an introduction to poetry. I suggest you buy these books online. I won't talk about those well-known websites that buy books, so as not to be suspected of advertising.