Buddhism texts which have least amount of disinformation

I am interested in learning about Buddhism. But I want to learn it from teachings of Buddha or other those texts which have not disinformed over the course of history. For example , if you read the book: https://books.google.co.in/books/about/History_Of_Hindu_Imperialism.html?id=51dWPgAACAAJ&redir_esc=y you will come to know how Hindu priestly caste ( Brahmins) were keen to do harm Buddhism as they were against equality. I think there is a possibility disinformation might have added in buddist texts in other regions of the world also. > So, can you please tell which text about buddhism contains least amount of disinformation and are best to learn about buddhism for a beginner? I shall be really thankful!