If you're hunting for a legal copy of 'Marriage for One', the best habit I've developed is to check official ebook and comics stores first. Start with big ebook shops like Amazon Kindle, Apple Books, Google Play Books, Kobo, and BookWalker — many translated romance novels and light novels end up there. For comics or manhwa-style releases, look at Tappytoon, Lezhin, Tapas, Webtoon, and Comixology. Those platforms handle official English translations and pay the creators, which matters more than it seems.
I also poke around the author's or publisher's official pages and their social media. If the work is licensed, the publisher will proudly list where you can buy or read it. Goodreads and NovelUpdates (for novels) or MyAnimeList (for manga/manhwa) often list official releases and links. Libraries are another goldmine: use OverDrive/Libby or Hoopla to borrow digital copies if your library carries them. If you find only fan translations or sketchy sites, don't use them — they might be the only thing that shows up on a search, but they're not legal and they undercut the people who made the story.
Finally, if region locks block you, consider buying a physical copy from an international bookseller or ordering a licensed print edition; sometimes I buy a paperback just to support a favorite author. Honestly, finding official sources can take five minutes or a couple hours depending on availability, but it's always worth it — nothing beats reading a polished, creator-supported translation of 'Marriage for One', and I feel better knowing the artists and translators are getting paid.