You can follow the following steps to learn the basics of Korean:

1. Learn Korean letters: Korean has 24 letters, called "Korean letters". You can learn how to pronounce and write these letters through online tutorials, mobile apps, or Korean learning books.

2. Learn basic Korean words and phrases: Start learning some basic Korean words and phrases, such as greetings, numbers, colors, etc. You can use learning resources such as vocabulary flashcards, learning apps, or online courses to help you memorize these vocabulary words.

3. Learn basic grammatical rules: Understanding the basic grammatical rules of Korean is an important step in learning Korean. Learn basic grammar rules such as the order of subjects, predicates, and objects, and the tense and mood of verbs.

4. Practice listening and speaking: Improve your listening comprehension by listening to Korean music, watching Korean dramas, or using online resources for listening exercises. At the same time, try to imitate Korean pronunciation and practice oral expression.

5. Reading and writing exercises: Improve your reading comprehension skills by reading Korean articles, books or newspapers. At the same time, practice writing in Korean, such as writing in a diary, posting on Weibo, or communicating with Korean friends.

6. Participate in language courses or exchange activities: Take formal Korean language courses or join Korean learning groups to practice speaking and communication with other learners.

Remember, learning any language takes time and effort. Maintaining a persistent and positive learning attitude and communicating with Koreans more will help you better master the basic knowledge of Korean.