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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AWS Data Engineering Projects for Your Portfolio
Five AWS data engineering projects for a portfolio, on real public data: a serverless lake queried with Athena, event-driven ingestion with Lambda, an orchestrated Glue pipeline, a streaming path through Kinesis and Firehose, and a Redshift warehouse. Each lists the services, what it proves and cost cautions.
VPC Basics for Data Engineers on AWS
Data engineers meet Amazon VPC when a job cannot reach a database or times out calling S3. This guide covers the networking behind those failures: CIDR blocks and subnets, what makes a subnet public or private, route tables, NAT gateways, VPC endpoints and security groups, with a small platform network built in code.
Partitioning and Bucketing in Spark Explained
“Partition” means three different things in Spark: in-memory partitions, directory partitions on disk, and buckets. What each one controls, which setting or method changes it, and how to choose partition and bucket columns without creating millions of small files.
Prompt Injection and LLM Security: What You Need to Know
Prompt injection is the top risk in the OWASP Top 10 for LLM applications, and there is no known way to prevent it outright. What direct and indirect injection look like, why RAG and agents widen the attack surface, and the design controls that limit the damage.
AWS Free Tier: What You Can Build for Practice
The AWS Free Tier now works through account plans and credits. This guide explains the Free and Paid plans, what happens when a Free plan ends, which services suit data practice within the credits, what consumes them quickly, a budget with alerts created in code, a cleanup routine, and practising without an account.
Model Explainability in Production with SHAP
SHAP turns a prediction into per-feature contributions you can show a customer or an auditor. On 30,000 real credit card accounts, this guide produces reason codes for declined applicants, checks that explanations add up exactly, and shows an equally valid explainer setting changing the reasons for 42% of them.