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.
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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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Redshift Interview Questions and Answers
Redshift interviews keep returning to two design choices: how rows are distributed across slices, and how they are sorted. Both are modelled here on three million real taxi trips, showing a distribution key that leaves five of eight slices idle, a join that moves 87.5% of rows, and a sort key that skips most blocks.
AWS Data Engineer Guide: Skills and Services
Lists of AWS data engineer skills are usually lists of AWS services. Survey data on data engineers who work on AWS tells a different story: infrastructure as code, containers and non-AWS databases are as much a part of the job as Glue or Redshift. Here is that evidence, and a map of services by task.
Data Analyst Interview Questions and Answers, Part 2: The Metric Investigation Case
One interview round trips up more analysts than SQL: the metric investigation case. 'Cancellations went up six points. Why?' This guide works one real case end to end on public hotel booking data, showing the five steps interviewers look for, from checking the data to splitting mix from rate and finding the driver.
Data Engineering Interview Questions and Answers, Part 2: The Debugging Round
Some data engineering interviews skip theory and hand you a broken query: the numbers are wrong, find out why. This guide reproduces five classic pipeline bugs on real public data, shows the symptom each produces, how to diagnose it quickly and the fix an interviewer expects.
GCP Interview Questions for Data Engineers, Part 2: The Apache Beam Coding Round
Dataflow roles often include a short Apache Beam coding exercise. The tasks are small, but they show whether you think in PCollections and combiners or in loops. Here are five typical tasks, solved and run locally on real data, with what each one tests and the follow-up questions interviewers ask.
AWS Data Engineer Salary in India 2026: Does AWS Experience Pay?
Does AWS experience actually raise pay in India, or is it just a line on a CV? Real 2025 survey data for India gives a clear answer when people are compared with others of the same experience: AWS users earn more, and AWS combined with infrastructure skills earns more still. Here is the data and what to do with it.