IT & Software

Last updated: July 2026. Written by Josh Hutcheson, OnlineCourseing editor. QUICK VERDICT Best overall: Complete Guide to Elasticsearch by Frank Kane is the clear pick — 4.7 stars from 25,000+ ratings, 155,000+ students, and refreshed in 2026 for the current Elastic Stack. It covers search, aggregations, and the whole ELK pipeline hands-on. Best for the […]

Last updated: November 2026. Written by Josh Hutcheson, OnlineCourseing editor. See our review methodology. QUICK VERDICT The short version: Take Windows Server 2025 Administration on Udemy for the main course, use Microsoft Learn’s free paths for exam coverage, and build a home lab with Microsoft’s 180-day evaluation. The current credential is Windows Server Administrator Associate,

Last updated: October 17, 2026. Written by Josh Hutcheson. See our review methodology. Quick verdict Best certification path: CompTIA A+, with Mike Meyers’ TOTAL: CompTIA A+ Core 1 (4.6 from 89,000+ ratings) and its Core 2 companion. Best second opinion: Jason Dion’s A+ course and practice exams. Best for a career change: Google IT Support

Last updated: October 2026. Written by Josh Hutcheson, OnlineCourseing editor. We re-opened every course below on 22 October 2026 and read its rating, enrollment, length and last-update date from the provider’s own page that day. See our review methodology. QUICK VERDICT Bottom line: For most people, Kevin Brown’s PowerShell: Step-by-step (4.6★ from 7,364 ratings, updated

Last updated: July 2026. Written by the OnlineCourseing editorial team. See our review methodology. QUICK VERDICT Bottom line: Shell scripting is the glue of Linux and DevOps work, and a single project-based course covers what you’ll actually use. Complete Linux Bash Shell Scripting with Real Life Examples is the strongest current pick. Best for: Developers,

Last updated: November 2026. Written by Josh Hutcheson, OnlineCourseing editor. See our review methodology. QUICK VERDICT Bottom line: learn the architecture first, then the implementation in your own language. Microservices Architecture: The Complete Guide (Memi Lavi, Udemy) is the best vendor-neutral start; for code, Java developers should take in28Minutes or EazyBytes, JavaScript developers Stephen Grider,

Last updated: July 2026. Written by the OnlineCourseing editorial team. See our review methodology. QUICK VERDICT Bottom line: Arduino is the friendliest on-ramp to electronics and physical computing, and a single project-based course gets you building real circuits fast. Arduino Bootcamp: Learning Through Projects is a solid, hands-on starting point — and the free resources

Last updated: October 2026. Written by Josh Hutcheson, OnlineCourseing editor. We re-opened every course below on 24 October 2026 and read its rating, enrollment, length and last-update date from the provider’s own page that day. See our review methodology. QUICK VERDICT Bottom line: Jenkins is still the CI/CD server most enterprise DevOps job posts ask

Last updated: July 2026. Written by Josh Hutcheson, OnlineCourseing editor. See our review methodology. QUICK VERDICT Bottom line: Nmap is the reconnaissance tool every network defender and penetration tester learns first, and it barely changes year to year — so a slightly older course from a strong instructor beats a brand-new one from an unknown.

The short version: for practical DSP, Udemy’s signal-processing courses (Mike X Cohen’s in particular) are the accessible route — search the Udemy catalog for current ratings. Engineering-track learners should weigh the MATLAB toolchain via our MATLAB courses guide, and EPFL’s classic DSP course offers a free preview of its first module on Coursera. Last updated: