Please ask your friends to recommend a few books on exegesis, phonetics, and script! Thank you!

Exegesis: Lu Zongda's A Brief Introduction to Exegesis, Guo Zaiyi's Exegesis

Phonetics: Tang Zuofan's A Course in Phonetics (3rd edition)

Text: Qiu Xigui's An Outline of Typography

Text and exegesis are supplemented by Shuowen Jiezi (or Shawen Jiezi Zhuyi), phonetics is supplemented by Guangyun (广韵), and exegesis is supplemented by Erya (尔雅).

These knowledge is not easy to self-study, do not be greedy to learn fast, it is recommended to learn the text, followed by exegesis, followed by phonetics. First read the above book ("Shuowen", "Guangyun", "Erya" and other ancient books can be a little slow to read, but it is appropriate to read one or two), lay a foundation, and then seek depth.