One of the books that my teacher John Kells used to sell was T.T Liang's "T'ai Chi Ch'uan for Health and Self Defense".
In the Preface there are some words on inspiration which can be found here
As it was written in the pre-internet era I do suspect it would not only include books and teachers but also clip/videos on social media sites.
I love seeing these and what people are up to.
In the end though it does all boil down to your personal practice.