Yan Liu, a beginner, is difficult to master the structure and brushwork, and it is difficult to transfer to other schools and cursive scripts in the future. Not recommended.
Zhao Mengfu's words, such as The Biography of Hanshu Ji An, still have the artistic conception of running script, which is not suitable for beginners.
You can learn regular script first, then Zhao Mengfu's regular script, then Wang's running script, and then Li Yong's strength. Learn Mi Fei's calligraphy and brushwork, and learn Sun's book spectrum. Then chase after the monuments such as Qin, Han and Wei dynasties.
Finally, create your own style when you are at least sixty years old.
I think this is the way to learn books.