Resources

Pi (π), the irrational constant ~3.14159 that underpins circular and spherical calculations, is crucial for geometry, trigonometry, and many real-world tasks. In Excel you can insert π with the =PI() function, adjust its decimals, add the π symbol, and embed it in formulas. For example, =PI()*r^2 to find a circle’s area. These techniques power advanced analytics in finance, engineering, architecture, fluid dynamics, and other business scenarios where precise circular measurements matter.

Microsoft 365 Copilot can super-charge Word, Excel, Outlook, PowerPoint, and Teams, but IT managers must align licensing, data governance, and clear business goals before launch. In this article, we discuss how engaging stakeholders early, piloting with a small cross-functional group, and phasing the rollout lets teams refine guidance and measure real productivity gains. Role-specific, hands-on training - prompt-engineering tips, quick-start resources, and “Copilot champions” - converts into confident daily use while resolving emerging user challenges.

A stacked bar chart lets you see both totals and the category-level breakdown within each bar, making comparisons richer than a standard bar chart. The article walks you through creating one in Excel: organise data by categories, select the range, choose Insert › Stacked Column, and fine-tune titles, legends, colours, and data labels. Best practices include limiting each bar to roughly four stacks, adding concise labels, and using clearly distinguishable colours to keep the visualisation readable. W

Excel’s percentage-change formula, =(New Value – Old Value)/Old Value, turns raw figures into actionable insights. By applying it across revenue, costs, and productivity data, you can build powerful KPIs and spot upward or downward trends over time. Linking those live Excel metrics into Power BI dashboards automates analysis and keeps decision-makers up to date without manual updates. Combined with targeted, small-group Excel training, these techniques equip teams to forecast accurately, optimize resources, and respond quickly to shifting business conditions.

Microsoft Copilot, OpenAI’s ChatGPT, and Google’s Gemini are leading AI assistants, each excelling in different environments. Copilot integrates deeply with Microsoft 365 to automate documents, data analysis, and email, while ChatGPT shines in open-ended conversation, creative writing, and flexible plugin-driven workflows. Gemini prioritises speed and factual accuracy within Google Workspace, offering powerful research and summarisation capabilities. Choosing the right tool depends on your ecosystem, need for customisation, and whether productivity, creativity, or precision is the top priority.

The guide explains that percentage change in Excel is calculated with the simple formula =(New Value – Old Value)/Old Value. It walks readers through entering data, applying the formula, formatting results as percentages, and using the fill handle to extend calculations across multiple rows. Finally, real-world examples—from revenue tracking to budgeting—show how this metric supports decisions, and a Q&A section answers common Excel questions.

А Business Continuity Plan (BCP) is a proactively crafted blueprint that keeps essential operations running when crises like natural disasters, cyber-attacks, or power outages strike. It protects revenue, customer trust, legal compliance, and long-term viability—critical since up to 60% of businesses without a plan never recover. Because continuity is an ongoing discipline, leadership buy-in, routine drills, and plan updates are vital for embedding a culture of resilience.

Traditional reading-and-writing literacy has broadened into digital literacy—the ability to locate, evaluate, create, and communicate information safely and effectively through technology. The article traces this evolution from basic “computer literacy” of the 1990s to today’s multifaceted concept that spans information, media, and AI literacy. Digital skills now underpin social inclusion, workforce readiness, and democratic participation, while gaps in access, competence, and support exacerbate inequality.

In this guide, we look at how Excel’s AGGREGATE function turns messy, multi-source data into reliable, actionable reports by performing sums, counts, averages, percentiles, and other calculations while automatically ignoring specified errors or hidden rows. Best practices include labelling outputs clearly, testing formulas on small samples, combining AGGREGATE with pivot tables or filters, and using Excel’s error-checking tools to troubleshoot formulas for maximum accuracy and efficiency.