Seoul has a number of cities with plenty of things to do outside of Seoul. If you've got kids, you're sick, or just plain ol' lazy, you might want to take a taxi to these outer suburbs. If you do, make sure you negotiate with the taxi drivers to save money.
Korea is the most wired country in the world. And the great city of Seoul offers free wifi for Instagram addicted travelers who post pics of every meal and are probably Asian. The free wifi in Seoul is a government initiative to offer 10,000 free public wifi zones, slated to be completed by 2015. And it is awesome. No need for logins or passwords, and they're located in very popular areas, too. Just find "Seoul Wifi" and food porn to your hearts content.
Considering the dirt cheap price and ease of making, it’s no surprise to see ramyun stocked in most Korean households. The methods and ingredients people use can vary greatly, but either way you can’t really mess up ramyun. If you do, put out the fire in the kitchen and take a gander at this list.
Nagwon Music Mall (낙원악기상가) is THE place in Seoul to find any musical equipment or related service. The mall is a collection of at least 100 small independent music stores who each typically specialize in a certain area or instrument. Come here if you looking to get some rock to your roll.