Hola Earel Sorry, I don't know where to find them. But I could get Korean scripts for Korean movies, dramas - including latest ones - it may be not as helpful as Korean subtitles, but it will help somehow. If Korean scripts sound good to you, just let me know. ;)

I don't think people make Korean subtitles for foreigners. There are all different versions of subtitles but not in Korean.

Hello! I had that exact same problem except I was searching for Japanese. You are very smart for trying to look for video with caption in it. That method should definitely help you with reading later on. I found that Vikki.com is a website that has videos with captions in them... sometimes like 60~70%? I've been watching asian dramas for while and that's the best answer I can give you. I hope it helps