While there is no single authoritative "proper guide" with that exact title, content featuring "Thais" (Thai people) and transgender culture is a popular topic for travel and culture vloggers in Thailand. These videos typically explore the social acceptance, identity, and daily lives of the (transgender women or "ladyboys") in Thai society. Key Context & Terminology
Many creators document the challenges and triumphs of being transgender in Thailand. Note on Terminology
This is the Thai umbrella term for individuals assigned male at birth who present as feminine. While often translated as "ladyboy" for tourists, Kathoey (Wikipedia) is the more culturally accurate term.
The term "tranny" used in your query is considered a highly offensive slur in many English-speaking Western cultures. In Thailand, the English term "ladyboy" is common in tourist areas and is generally not viewed as offensive by the community there, though many prefer to be called "women" or "trans women" in formal settings.
Videos such as Entering The Land of LADYBOYS explain how Kathoey are integrated into everyday life, from retail to specialized cabaret shows.