Guides
Clear, practical explanations of common technical and financial topics — each one links to the free tools you need to apply what you have learned.
- How to Check SSL Certificate Expiry (and Avoid Downtime)An expired SSL certificate is one of the most avoidable causes of website downtime, yet it happens to large companies every year. This guide explains how to check a certificate's expiry date, what the warning signs look like, and how to make sure you are never caught out again.Updated June 27, 2026
- How to Calculate EMI: Formula, Examples, and TipsEMI, or Equated Monthly Installment, is the fixed payment you make to repay a loan. Knowing how it is calculated helps you compare offers and avoid borrowing more than you can comfortably repay. This guide breaks down the formula with a real example.Updated June 27, 2026
- DNS Records Explained: A, AAAA, CNAME, MX, TXT, and NSDNS records are the settings that tell the internet where your domain points and how its services behave. If you have ever wondered what an A record or an MX record actually does, this guide explains the essentials without the jargon.Updated June 26, 2026
- YouTube RPM by Country: What Creators Actually EarnTwo channels with the same view count can earn wildly different amounts. The reason is RPM, and it depends heavily on where your audience lives and what your videos are about. Here is how to think about YouTube earnings realistically.Updated June 25, 2026