Photographers for National Geographic spend a lot of time doing research. This helps us figure out what's there—what the place is about and what subjects we need to cover. Read brochures and travel books. Go to libraries, bookstores, or onto the Web. Talk to friends who have been there. Pick up travel information at the country's embassy. Find whatever you can that is relevant, and devour it.
The image of Sapphire Kiu; a Hong Kong-based model (above), was made in early December 2018 on the famous (or infamous, depending on your point of view) Temple street, and will be part of a forthcoming audio slideshow (aka photo film) titled "The Songstress of Temple Street". It will tell the story of Qin Yi, a famous Shanghai singer in the 1930s, who "returns" to Hong Kong where she started her career. Some of the images were made in Temple's Street Canton Singing House and the Tin Hau Temple.
As an approved photographer on stock libraries, you can possibly get access to client briefs where you can submit your work direct to the client, meaning they’ll consider you for the project and see your profile. Otherwise there’s usually a marketplace type system for you to upload your images and have them added to collections based on themes, destinations and seasons.
If the instability of the freelance photographer’s way of life isn’t for you, you can always find a day job that involves traveling. Then you can go to lots of places, be paid for it through your job, and do travel photography in your spare time. Jobs like flight attendant, global salesperson, English teacher (or a spy!) are just several of many professions that let you visit your dream locations, without being too risky on the financial side.
It was in 2006 when I traveled to the sacred city of Varanasi for the third or fourth time; this time in search of real sadhus rather than those I encountered on the ghats of the river Ganges. The more photogenically flamboyant of those would "earn" a few rupees from tourists and photographers who sought to augment their inventory of exotic portraits of these characters; perhaps paying them a tidy sum if they agreed to be photographed in a rowing boat or next to a temple.
You cannot always ask permission, of course. If you are shooting a street scene or a wide shot of a market, you can't run up to everyone and ask if it's OK. In general, people do not mind this sort of photography—it's only when they're singled out that they get uncomfortable. But not always. Be sensitive to the scene in your viewfinder. If people are getting nervous, ask permission or move on.
Another place to capture expressions are the subways; either on the platforms or in the cars themselves. My favorite images are the one of a young woman avidly watching a movie on her smartphone, while wearing a single hair roller to tame her fringe....and of the young girl who appears to be viewing a smart phone screen on an ad on a subway platform while her mother is busy texting on her real phone.
Before I get into the “how”, let me tell you about the “how much”. In traveling the world, I spend an average of $2,000 a month. That includes accommodation, transportation, food, etc. I don’t have a home, so that $2,000 is in fact the entire extent of my expenses. Thus, to keep myself from non-under-bridge housing, I need to make that much each month… but preferably a bit more. And, before you ask: no, I don’t have savings, I don’t have a trust fund, and no I don’t have a sugar mama (although I want one).
I have found Alessandro Bergamini's China gallery to hit all the right notes in that regard. Most of his images were made in Guizhou; a province located in the southwestern part of the country, and well known for its traditional rural villages, inhabited by minority groups like the Miao and Dong. Other images in the gallery were made in Guangxi , another autonomous region bordering Vietnam, and home to the famous cormorant fishermen of Guilin. I haven't been but I read that even though the water is too polluted now for fishing to be sustainable, these fishermen are catnip for many photographers, and earn their living in that fashion.