Language learning, grammar, and practical dictionaries
This section is quite mixed. You can find language-learning books, phrasebooks, grammar guides, and a few dictionaries. The current stock leans toward practical use: beginner reading in Spanish, German, Italian, and Russian, plus phrasebooks and reference books for everyday study. Stock may change.
There are also books about language itself. That includes linguistics, punctuation, idioms, word usage, and grammar. Some titles are clearly for learners, while others are more for curious readers who enjoy how English works and how words are used.
A few languages appear more than once at the moment, especially through Olly Richards language readers, though that can change. You may also come across Cantonese, Turkish, Arabic, Indonesian, Ukrainian, Chinese, Portuguese, and bilingual dictionaries in other languages. The range is useful, but still somewhat uneven.
If you need broader school and study materials, Education & Reference is the closer general category. For books that focus more on reading and interpreting texts than on grammar or phrasebooks, see Essays & Literary Criticism. If you are interested in wordplay and language puzzles, some nearby reference-style titles may also overlap with Arts, Crafts & Hobbies, which is broader and less language-focused.