Just my experiences here in Korea, and in other big cities that I’ve been to across the world. I’m naturally in introvert, so crowded places can get to me, especially slow walkers.
Remember that romanization is only a tool! Try not to depend on it too much and try learning the Korean alphabet and how to pronounce the letters properly and you will have a much easier time learning.
Some great books to get your started are Korean Made Simple: A beginner's guide to learning the Korean language and Become a Hangeul Master: Learn to Read and Write Korean Characters
Check out our Dom & Hyo ebooks below.