Korean language is just as difficult as any other languages, but Korean letters are easy to read. That's right - you may not know the meaning, but you can still read.
Korean alphabet by Keith Enevoldsen explains the gist of it very well.
Korean letters are logical. Meaning, you have very little to remember to learn how to read them. Once you understand how to read them, you can read all 11,172 Korean letters, and I can guarantee that all the Korean letters you see around are one of them!