This chapter introduces the fundamentals of Indonesian pronunciation step by step, covering the alphabet, vowels, diphthongs, consonants, and other key pronunciation and spelling features. Each section includes word examples, meanings, and Korean pronunciation guidance to help Korean speakers understand and reproduce Indonesian sounds more easily. Learners can then put these pronunciation basics into practice through everyday vocabulary, including numbers, days, months, seasons, transportation, directions, objects, places, adjectives, tastes, as well as basic, ber-, and meN- verbs. By combining pronunciation fundamentals with practical vocabulary, this chapter provides a strong foundation for moving confidently into Indonesian conversation.