Which book should I learn for beginners of brush calligraphy?

See what kind of fonts you like, seal script, Li Si's Taishan Moment, official script, Cao Quanbei's and Yan Zhenqing's regular script Duobao tablet, Wang Xizhi's Preface to Lanting Collection or Mi Fei's Shu Su Tie, and cursive script can all be placed in the back. Small seal script is relatively stable, suitable for beginners to practice, conducive to pen control, and is the foundation. If you want to be more specific, say it again.