Korean children's books?
Are there any Korean children's books I can read to work on my basic grammar? Also, are there any in Korean prose, with the Hangeul words on one line and the English words under them? It would be nice to have some books to read so that I can build up some form of immersion, because right now, I have no immersion.
I don't know what level you are at, but there are numerous selections on Youtube with hangul subtitles.
Korean class101 has some free offerings with both English and Hangul subs https://www.youtube.com/watch?v=3n9Khr-ut_0
There are also websites other than Youtube that provide stories-- https://m.blog.naver.com/camiashon/10055442121
Do some web surfing and you can find more
If you want to read a fun book, try 돌아온 진돗개 백구 by Song Jae Chan 송재찬 1997
It is a wonderful (prize-winning) children's book (190 pages) "narrated" by a very special dog, drawn from an actual event of a dog returning hundreds of miles to its original home.