The light novel for 'Solo Leveling' was originally published in Korean, and an official English translation has been licensed by Yen Press. You can read a portion of it for free through Amazon's 'Look Inside' feature, Google Books previews, or directly on the Yen Press website, which often offers substantial first-chapter excerpts. Reading legally usually means accessing these sanctioned samples, which can cover the first few chapters, or potentially accessing it through a public library's digital lending service if your library partners with an app like Libby. These methods let you read a decent chunk without spending money and are completely above board.
For the entire novel, legally reading it for free is trickier since it's a licensed commercial product. The most common free legal path is through library digital collections, which depend heavily on your local library's specific subscriptions. If they have it, you'd borrow it for a limited time, similar to a physical book. Otherwise, the official route involves purchasing the digital volume on platforms like Amazon Kindle, Apple Books, or Kobo, or through a subscription like Kindle Unlimited which might offer it as part of its rotating catalogue, though that's a paid service, not free.
Many fan-translated sites hosted the novel before the official English release, but now that an official version exists, those fan translations are no longer legally supported. Sticking to the publisher's own preview pages or a library link ensures the translators and original author get their due credit. The Yen Press website is a solid starting point to find their official sample, and from there you can check your local library's digital portal to see if a full borrow is available, giving you a legitimate way to dive into Sung Jin-Woo's journey without venturing into murkier online territory.