Open Book is a Ukrainian online bookstore offering a broad selection of books for learning, professional development, and leisure. Its catalogue includes fiction and poetry, fantasy, detective stories, biographies, history, children’s books, school textbooks, workbooks, reference titles, and popular science. Readers can also browse specialist publications covering law, business, economics, medicine, agriculture, technology, psychology, and other subjects, as well as books in foreign languages, maps, and gift editions. The store features works by Ukrainian authors alongside translations of international writers, and regularly adds new releases and bestsellers from Ukrainian and international publishers.

Customers can search and filter books by genre, author, publisher, price, and other characteristics, review product details, and place orders online. Open Book offers discounts and promotions, with flexible payment options that include online payment and cash on delivery. Most orders are prepared within one to two days, and delivery generally takes two to seven days depending on the carrier. The store also states that delivery is free for orders over 2,000 hryvnias.