I just realized that the official title of the song has a spelling mistake, but that's because 거야 is often pronounced 꺼야.
Anyways, check out this break down of a cute song along with all the grammar links to help you out below.
1. Want to ~고 싶다: • Korean Grammar in One Minute - Want to (-고싶다)
2. Shall we ~래요: • Korean Grammar in One Minute - I will/Shal...
3. Adjectives ~ㄴ/은: • Korean Grammar in One Minute - Adjectives #2
4. Location particle ~에: • Korean Grammar in One Minute - Location Pa...
5. Negative not 못~: • Korean Grammar in One Minute - Good or Bad...
6. Only ~만: • Korean Grammar in One Minute - Just/Only #...
7. Try to V + 보다: • Korean Grammar in One Minute - Try to Do (...
8. Direct Object Particle ~을/를: • Korean Grammar in One Minute - Direct Obje...
9. Future (casual) ~ ㄹ 거야: • Korean Grammar in One Minute - Future Tens...
10. Negative Command ~ 지마(세요): • Korean Grammar in One Minute - Negative Co...
11. For me V + 주다: • Korean Grammar in One Minute -For me (Conj...
12. Adverb - V + 게: • Korean Grammar in One Minute - Adverbs #1 ...
13. Thing - ㄴ/은/는/ㄹ 것: • Super Important Lesson That Is Necessary t...
14. Go (to do ___) ~러 다니다: • Korean Grammar in One Minute - Go to ___/C...
15. Quoting " " ~ 다고: • Korean Grammar in One Minute - Quoting #1 ...