Beginner's guide

Credit freeze: How to protect your credit
There was a self-help story about South Korea's national ID number being a public good shared by the entire world, but it's become something of a mystery. The U.S. Social Security Number (SSN), the Korean equivalent of the national ID number, is also becoming more and more...
Create your first credit card in the US, ver. 5.0
(minor update, 01.13.2021) Like everything else in the world, creating a credit card in the U.S. requires a good first step. 1) The world won't end if you don't make a good first step...
5/24 Regulations, get it right
Update (01.29.2021) If I had to pick the single most important change in the magic world over the past 2-3 years, it would be Chase's introduction of the 5/24 rule. I don't think Amex's "once in a lifetime" rule or Citi's same...
Ticketing 101: Operating carrier vs. ticketing carrier
  Updated 12.27.2020 "If earning miles is addition and subtraction, redeeming miles is calculus." "I've accumulated a lot of miles, but I don't know how to redeem them. Please help me..." You're not alone, right? We've all heard that redeeming miles isn't easy, so we've...
Shortcut to Cilantro: Mileage ticket search, ticketing 6-step workflow
  It's hard to redeem miles, isn't it? You've been accumulating miles for years without your spouse noticing, thinking that if you just hoard them, you'll be able to travel whenever you want, but when you call the airline to book a trip for a family of four to Korea this summer...
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