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
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.
Many creators document the challenges and triumphs of being transgender in Thailand. Note on Terminology
You can find extensive video guides and interviews on platforms like YouTube that explore these topics: