Wiki
Plain-language guides to points, cards, credit, banking, eSIM and travel
Short, sourced explainers you can read in a few minutes. Each one names where its facts come from and when we last checked them.
101 guides across 8 topics
Browse by topic
- Rewards basicsHow rewards, points, fees and sign-up bonuses actually work.5 guides
- Credit cardsSign-up bonuses, annual fees, issuer rules and the fine print.47 guides
- Points & milesAirline, hotel and bank points: how they are earned, valued and kept.11 guides
- Credit profileWhat issuers look at when you apply: scores, utilization and inquiries.4 guides
- Banking & paymentsAccounts, IBANs, cross-border transfers and virtual cards.9 guides
- eSIM & connectivityStaying online abroad without surprise bills.7 guides
- TravelPaying, insuring and moving across borders.12 guides
- SecurityDisputes, scams and keeping your accounts safe.6 guides
Guides labeled “rewards”
- TravelPaying in China with a foreign card: WeChat Pay and AlipayHow a visitor links an overseas Visa or Mastercard to WeChat Pay in 2026: the 3% fee and its waiver, the limits, why issuers say no, and the effect on rewards.4 min readBeginner
- Credit cardsCard rewards, gift cards and vouchers, explainedCash back, points and miles, plus gift cards and coupons. What each one is, how it can expire, and what to check before you count on it.3 min readBeginner
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