Training Articles
Insights, tips, and practical advice from the ExperTrain team
Stay ahead in your career with ExperTrain’s curated articles on tech, management, and productivity. From Excel tips and Power BI to leadership development and remote working strategies, our blog delivers actionable advice you can apply right away.
Understand the difference between Power BI measures and calculated columns, when to use each, how filter and row context affect them, and common beginner mistakes.
Learn how star schemas work in Power BI, including fact tables, dimension tables, relationships, granularity and why good data modelling improves reports.
Learn how Business Analysts identify, analyse and engage stakeholders, including power-interest grids, stakeholder maps, influence, needs and common mistakes.
Learn what SQL is, how database queries work, the core commands beginners use and why SQL is valuable for data analysts, BI professionals and business users.
A beginner-friendly guide to BPMN 2.0 covering events, activities, gateways, sequence flows, pools, lanes and how Business Analysts use process models.
Functional vs non-functional requirements explained with clear examples covering system behaviour, performance, security, usability, reliability and requirement quality.
Learn what requirements gathering involves, why elicitation matters, the techniques Business Analysts use and how to turn stakeholder input into useful requirements.
Compare AWS Cloud Practitioner and Solutions Architect Associate, including CLF-C02 vs SAA-C03, difficulty, experience and which certification to take first.
Compare Microsoft Azure Fundamentals and Azure Administrator, including AZ-900 vs AZ-104, difficulty, skills, job roles and which certification to take first.
Compare Cisco CCNA and CCNP Enterprise, including certification level, exams, topics, experience, job roles and when to progress from CCNA to CCNP.
Compare CompTIA Network+ and Security+, including topics, difficulty, job roles and whether networking knowledge should come before cyber security certification.
Compare CompTIA A+ and Network+, including topics, difficulty, job roles and which certification makes the best starting point for your IT career.
Understand Zero Trust security in plain English, including identity, least privilege, MFA, device checks, segmentation and how organisations can adopt it.
Learn what ransomware is, how attacks affect organisations, common warning signs, practical prevention steps and what to do after an incident.
A practical guide to starting a cyber security career, including entry routes, essential skills, certifications, experience and common job roles.
Learn what ethical hacking is, how it differs from malicious hacking, what penetration testers do and which skills and certifications support an offensive-security career.
Learn what a SOC analyst does, the skills and tools involved, typical career progression and which cyber security certifications can help you get started.
Ten practical cyber security steps small businesses can take to protect email, accounts, devices, backups, payments and staff without needing a large IT team.
Compare cyber security certifications for beginners, analysts, penetration testers, cloud specialists, auditors and managers, and choose a route that matches your career goals.
Practical, easy-to-understand cyber security advice for staying safe online, protecting accounts and devices, spotting convincing scams and knowing what to do if something goes wrong.
How long does it take to learn Excel? Compare beginner, intermediate, advanced and specialist skills, with a practical learning path and realistic timeframes.
Learn what Power Query is in Excel, what Get & Transform does, how queries clean and combine data, how refresh works and when Power Query is better than formulas or manual editing.
Is Power BI difficult to learn? See which skills are easiest, what makes Power Query and DAX harder, how Excel knowledge helps and a practical route from beginner to confident user.
Learn what DAX is in Power BI, how measures and calculated columns work, why context matters, and which functions beginners should learn first.
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