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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Azure Data Engineer Certification (DP-203) Guide
Exam DP-203 and the Azure Data Engineer Associate certification were retired on 31 March 2025. This guide explains what that means for people who hold it or were studying for it, what the exam covered, how the Fabric Data Engineer Associate exam DP-700 differs, and how to plan your preparation now.
From Service to Product Company: A Transition Guide
Moving from an IT services company to a product company changes more than the interview. The work shifts from delivering to a client's specification to owning outcomes and metrics. Using what product employers publish about the behaviour they hire for, this guide explains the differences and a plan.
Top 10 Machine Learning Algorithms Explained for Beginners
The ten machine learning algorithms beginners should know, each explained by how it works, what it is good at and where it fails, plus a head-to-head benchmark of the seven classifiers on three real datasets under identical cross-validation, and what published studies of hundreds of datasets add to that picture.
How to Build a Data Analyst Portfolio in 2026
How to build a data analyst portfolio in 2026 that reviewers actually open and read: what they check in the first few minutes, a hub page and case-study structure for analyst work, publishing dashboards without exposing data you should not, presenting SQL and spreadsheets, and a checklist to run before you apply.
Power BI Performance Tuning: Make Reports Faster
A method for making Power BI reports faster: measure first with Performance Analyzer and read its DAX query, visual display and other timings, then shrink the import model, reduce column cardinality on a real retail dataset, write lighter DAX, filter and simplify pages, and check capacity and gateways.
Tableau Interview Questions and Answers
Tableau interviews return to one topic more than any other: when each calculation happens. This guide answers the core questions on FIXED, INCLUDE and table calculations, with the Tableau formulas and their results reproduced on a year of real online orders: one filter, two answers, 100% or 2.57%.