Personally, I prefer Neijing. Although there are many contents, it is difficult to understand, but it is the foundation of Chinese medicine.
It's not bad to start with typhoid fever, but Neijing is the foundation.
In addition, at the beginning, we should take the four books and five classics as the purpose, don't go home, and don't be too partial to the books of later generations. When you have achieved something in the future, you can participate in other families and broaden your horizons.