[duopixel]

The Tao Te Ching itself is the best introduction to philosophical Taoism (the religion is something else). Perhaps certain passages can be obscure, but they reveal their meaning in time.

Take a look for yourself https://terebess.hu/english/tao/gia.html

[dorchadas]

The dichotomy between 'philosophical' and 'religious' Daoism is ahistorical, and stems from the influence, especially, of the Jesuits. They were tied together and mixed together from the beginning, especially neidan traditions.

Yes, there's two words - but they were often used interchangeably.