I might be going to Korea and/or Japan. Is there a huge language barrier? I'm the kind of dude who can generally find his way around without a lot of help. But I've only travelled mostly to tourist friendly /English speaking countries (and Europe), and the Caribbean.
I'm not afraid or anything,I'm willing to step out on the ledge if need be; I'm just wondering if it'll be easy to navigate as an English speaking person (street signs, merchants, etc). Any tips or info?
1. "I'm by no means an expert." In response to Reply # 0
The only thing I can relay is that it's probably best to begin to learn the language spoken in the country you choose before you visit / live there.
My brother lived in Taiwan for a year after he finished his undergrad. He taught English there and had a nice enough time while he was there. But he did try Chinese for a couple of semesters while he was in college, which helped himself acclimate to Taiwanese culture.
I'm sure being somewhat competent in the language being spoken can only help. And living in a modern city and country increases the likelihood that you will land in a place where you can find resources provided in English or at the very least find expats who can point you in the right direction if / when you need help.