IT Career Guides & Free Resources
Expert roadmaps, tutorials, salary guides and interview prep across Data Science, Generative AI, Python, Cloud & Analytics — written by GloryTecks trainers in Hyderabad.
Featured Guides
Data Science Roadmap 2026: A Complete Step-by-Step Guide
A data science roadmap in dependency order, from Python and SQL through cleaning, statistics and honest model evaluation to communicating results, with an exit test at every stage and one dataset that carries through the whole path.
What Is Generative AI? A Complete Beginner's Guide
What generative AI is, in plain language: how language models produce text one token at a time (shown with a tiny runnable model), how chat models are trained, how image models differ, what the technology is reliable for, and why it confabulates.
Learn Python from Scratch: A Complete 2026 Roadmap
How to learn Python from zero: install a current version (including the new Windows install manager), then work through seven stages, from values and loops to files, virtual environments, classes and tests, each ending with a small program you should be able to write on your own.
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Power BI Gateway Explained: Connecting On-Prem Data
The Power BI data gateway explained: how it connects cloud reports to data on your own network using only outbound connections, when you need one, the standard, personal and virtual network gateways, where to install it and what machine it needs, clusters for high availability, its limits, and keeping it updated.
Azure Synapse vs Azure Data Factory: A Comparison
Azure Data Factory moves and orchestrates data. Azure Synapse Analytics stores and analyses it, and happens to include a copy of Data Factory's pipeline engine. This guide compares what each can and cannot do, where the overlap is, how each is sized and billed, and the questions that decide which you need.
Power BI Tooltips: Adding Context to Visuals
How to use the three kinds of Power BI tooltip to add context without clutter: tooltip fields and aggregations, sentence-format templates, drill actions in the footer, report page tooltips built and assigned step by step, how line charts and cross-highlighting affect them, accessibility limits, and design tips.
Power BI vs Excel: When to Use Each Tool
A task-by-task guide to choosing between Power BI and Excel at work: the signs a workbook has outgrown Excel, what Excel still does better, the worksheet row limit tested on a real two-sheet retail dataset, and the ways the two tools work together, from Power Query to Analyze in Excel and connected tables.
How to Switch Careers After 30: A Practical Guide
People do move into tech after 30, though they are a small minority, and once there they are as satisfied as everyone else. Survey data from nearly 29,000 working developers and data professionals shows how common late starts are, which roles late starters hold, and what a realistic switch looks like.
Time Intelligence in DAX: YTD, MTD and Comparisons
DAX time intelligence for Power BI: the date table it depends on, year-to-date and month-to-date measures, fiscal year ends, prior-year comparisons with SAMEPERIODLASTYEAR and DATEADD, rolling windows with DATESINPERIOD, and the partial-month trap that turned a 62.7% increase into an 8.6% fall, shown with real numbers.