If you are looking for the best place to go for easy to read Korean and English subs for studying, KookieCane14 has the BEST Youtube channel. This user used to also be known as KookieCane13 and there are all kinds of wonderful videos there as well.
The translations are usually spot on, and the Korean subs are very easy to read and follow. Also a fan of the fact they don't only translate more than just the kiddy k-pop groups. For example I'm a little in love with K. Will and he has his own playlist. I could listen to Come to My Crib all day long.