Guides
14 plain-English guides on money, work and files — written to answer the question, then hand you the free tool that does the maths.
Why Your Resume Never Gets a Reply (And How to Fix It)
Most applications are parsed by software before a person sees them. The formatting choices that break that parsing, and the bullet-point pattern that gets interviews.
Read the guideHow Much House Can I Afford? A Straight Answer
What lenders will approve, what you can comfortably afford, and why those are different numbers. Includes the 28/36 rule, real payment examples and the costs buyers forget.
How to Invoice as a Freelancer (And Actually Get Paid)
What every invoice must contain, which payment terms get paid fastest, and the follow-up sequence that works on late payers — without damaging the relationship.
The 9 States With No Income Tax — And What They Charge Instead
Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington and Wyoming take nothing from your paycheck. Here is what the move actually saves — and costs.
How to Compress Images for the Web Without Wrecking Them
Which format to use, what quality setting to pick, and why resizing before compressing matters more than either. With target file sizes for every common use.
15 vs 30 Year Mortgage: The $300,000 Decision
A 15-year mortgage saves roughly $300,000 in interest on a $400,000 loan — but costs $800 more a month. Here is how to decide, with real numbers and the middle option most people miss.
How to Merge PDF Files Free — Without Uploading Them Anywhere
Most online PDF tools upload your documents to a server. Here is why that matters for contracts and payslips, and how to merge, split and convert entirely in your browser.
How Much Should You Have Saved for Retirement by Each Age?
Benchmarks by age, how much you actually need, and what to do if you are behind. With the 25× rule, 2025 contribution limits and the maths on starting late.
How to Create a Strong Password (And Why Yours Probably Is Not)
Length beats complexity, reuse is the real risk, and the rules most sites enforce actively make passwords worse. What actually protects an account in 2026.
Compound Interest, Explained With Real Numbers
Why $10,000 becomes $150,000 in forty years, how the Rule of 72 works, and why compounding is also the reason credit card debt is so hard to escape.
How Much to Tip in the US: A Practical Guide
What to tip at restaurants, for delivery, in hotels and at the salon — plus whether to tip on tax, how to handle automatic gratuity, and what changed after 2020.
What BMI Actually Tells You — And What It Misses
BMI is a screening tool built for populations, not individuals. Where it works, where it misleads, and the simpler measurement that predicts health risk better.
QR Codes for Small Business: What Works and What Fails
How large to print them, why dynamic codes can stop working, the Wi-Fi code you should not share, and the sticker scam that targets customers.
Sales Tax for Online Sellers: The Rules That Catch People Out
Economic nexus, marketplace facilitator laws, and why you may owe tax in states you have never visited. A plain guide for small US e-commerce sellers.
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