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.
72 guides across 8 topics
Browse by topic
- Rewards basicsHow rewards, interest and statements actually work.6 guides
- Credit cardsSign-up bonuses, annual fees, issuer rules and the fine print.13 guides
- Points & milesAirline, hotel and bank points: how they are earned, valued and kept.8 guides
- Credit & your rightsScores, reports, freezes, disputes and the laws behind them.12 guides
- Banking & paymentsAccounts, IBANs, cross-border transfers and virtual cards.10 guides
- eSIM & connectivityStaying online abroad without surprise bills.7 guides
- TravelPaying, insuring and moving across borders.10 guides
- SecurityDisputes, scams and keeping your accounts safe.6 guides
Guides labeled “cards”
- Credit cardsChase Sapphire Preferred vs Reserve in 2026: which annual fee is worth payingA 95-dollar card and a 795-dollar card earn the same Chase points. Compare the 2026 earning rates, credits, redemption ceilings and lounge access, see how much of the Reserve's fee you can realistically use, and decide which card, if either, fits you.3 min readIntermediate
- Credit cardsHow to price a sign-up bonus: the first-year formula, with nine October 2026 offersA 175,000-point bonus sounds huge until you subtract the annual fee and the spend you would not otherwise do. Learn the first-year value formula, see nine real offers priced at two point values, and why changing your cents-per-point can reorder the whole list.3 min readIntermediate
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