Technology Capsules

Excel formulas start with an equals sign and include functions for calculations, logical tests, and data lookup. This collection covers key formulas like IF for conditions, SUM and AVERAGE for calculations, and lookup functions such as VLOOKUP and XLOOKUP for finding data efficiently. It also includes guidance on formula syntax and practical examples to help users manage and analyze data effectively.

Choosing the right AI assistant depends on the kind of thinking your task demands—whether it’s creative ideation, deep analysis, or fact-based research. Perplexity stands out for research and fact-checking, offering real-time data with citations, while ChatGPT, Claude, and Gemini excel in synthesis and writing. This guide helps you match each tool’s strengths to your needs and budget, ensuring you pick the best AI for your specific task.

A laptop deal that looks great can hide a counterfeit, a gutted warranty, or a commission-driven recommendation. These tips take different angles on protecting yourself: vetting the seller and verifying authenticity, reading deals and affiliate links with a skeptical eye, or locking in real value after purchase with trusted software. Together they help you decide whom to trust and what to check before handing over your money.