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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Containerizing a Machine Learning Model Step by Step
Most container tutorials stop when the container starts. This walkthrough containerizes a real scikit-learn model step by step, then measures what matters: build and rebuild times, image size, the user it runs as, time to healthy, memory, and whether the container's predictions match training exactly.
Workflow Orchestration with Apache Airflow DAGs
Once you can write an Airflow DAG, the next problems are about design: files that slow the scheduler, branches that silently skip the final step, and dozens of near-identical pipelines. This guide runs four DAG design patterns on Airflow 3.3.2 and shows what each one fixes, with real output.
Power BI Error Handling in Power Query
Error handling in Power Query for Power BI: step-level and cell-level errors and their common causes, what Remove, Replace and Keep errors do, try with otherwise and catch for custom logic, and a real example where changing one column's type would have turned 10% of the rows into errors that Remove errors deletes.
MLOps Interview Questions and Answers, Part 2: The ML System Design Round
In the ML system design round, interviewers want numbers, not boxes. This guide works one design question end to end: a cancellation-risk service for hotel bookings. It checks the label and leakage, compares three models on quality, size and latency, and sizes the serving fleet from measurements rather than guesses.
Building an ETL Pipeline on AWS Step by Step
A step-by-step ETL pipeline on AWS, run end to end: extract raw files from S3, validate 2.96 million real rows with named rules, load cleaned Parquet into a partition, register it in the Glue Data Catalog, write a reconciliation report, and rerun without duplicates. Each step is mapped to its production service.
Career Growth: When to Stay vs When to Switch
Switching jobs usually pays more, but not always: in 29 years of US wage data, the switcher premium vanished after the financial crisis and peaked in 2022. Combined with what 1,245 data professionals say makes a job satisfying, it gives a practical way to decide whether to stay or switch.