An excellent way to learn another language is to read text in your language, and then a translation of that text into the language you want to learn. According to one online source, English is spoken by more people in the world than any other (18% of the world’s population). Spanish is the fourth language of the globe, with one in 14 people speaking it. and over 200 million speak French; hence, all of these are good languages to know.
I say SSL for Spanish, but it could also be ESL (Español as a Second Language), and I say FSL for French, which makes sense either way (Française as a Second Language).
I have created a series of books (value-added editions of classic literature) that contain the whole text of the book in both English and one of the other languages mentioned (Spanish or French). Whichever of these three languages is your primary language or your second language (and you want to learn the other one), these books can help you (and are fun to read).
Note: The Spanish, German, and French translations used are the official (public domain) translations of the works — they were not generated using AI.
Below is a list of these books that I have made available, from the most popular to the least (in terms of sales of my dual-language books, not necessarily the original one-language books); click on the book’s image to go to the paperback edition on its amazon page; from there you can also see the Kindle and hardcover editions, where they are available.
There are others that hardly sell at all for some reason, I don’t know why, such as: