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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Data Scientist Salary in Hyderabad 2026: How Pay Grows From Fresher to Senior
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ChatGPT Complete Guide: Features, Prompts and Use Cases
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DAX Guide: Measures, Calculated Columns and Context
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Python Mini Projects to Build in a Weekend
Weekend projects fail when they are too big to finish by Sunday night. The fix is scoping: a core you can build on Saturday and improvements for Sunday. Three mini projects are scoped that way here, a weather and bike-rental explorer, a safe file organiser and a habit tracker, with each Saturday core built and run.
Cloud Storage to BigQuery: Building an Ingestion Layer
An ingestion layer is the agreement between whoever delivers files and whoever queries tables. This guide designs one from Cloud Storage to BigQuery: a bucket layout BigQuery can read, one partition per day, loads that can be repeated without duplicates, a guard against misplaced rows, and a per-file audit.
Spark Performance Interview Questions
Spark performance questions ask what you would change, and how you would know it helped. Five tuning levers are tested on 3.5 million real taxi trips with evidence that does not depend on the machine: pushed-down filters in the plan, task counts, partition sizes before and after salting, join types, and cache hits.
Power BI Drillthrough and Drilldown Explained
Drilldown and drillthrough in Power BI: drill mode moves one visual through hierarchy levels, drillthrough opens a detail page filtered to the selected item. How the four drill icons differ, how to build a drillthrough page and button, cross-report drillthrough, design tips, and fixes when drillthrough does not appear.
Building Credibility as a Self-Taught Professional
Many working developers have no degree, but the share varies widely by role, and the pay gap with graduates narrows sharply with experience. Survey data on over 21,000 professionals shows where self-taught people already succeed, and which kinds of proof replace a degree in the eyes of a hiring manager.
Power BI Field Parameters: Dynamic Reports Made Easy
Power BI field parameters let readers switch the measure or dimension a visual shows from a slicer. How to create one, use it on axes, values and slicers, edit the generated DAX safely, control hierarchy behaviour in matrices, the known limitations, and when field parameters beat bookmarks or calculation groups.