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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Building a Finance Dashboard in Power BI
A Power BI finance dashboard built on Microsoft's Financial Sample workbook: two data traps to fix on import, core measures for sales, profit, margin and discount rate, reconciling totals before any visual, a profit bridge, a segment that loses money, what discounts do to margin, and a layout for finance users.
Building Incremental Data Loads That Scale
Designing incremental data loads that stay correct: the main patterns, a month of hourly loads simulated on real taxi data in which a watermark on event time silently missed 22.5% of trips while a watermark on availability time missed none, lookback windows, storing watermarks safely, deletes and backfills.
Building a Serverless Analytics Stack on AWS
A serverless analytics stack on AWS has no cluster to run: S3 for storage, Glue for the catalog and transformation, Athena for SQL, Lambda and Step Functions for triggers and orchestration, and a BI tool on top. This guide builds it layer by layer, lists what each service bills for, and says where it stops fitting.
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.
Building KPI Scorecards for Executives
How to build a KPI scorecard executives will actually use: how it differs from a dashboard, choosing a handful of balanced measures, writing definitions, owners, targets and red-amber-green rules, and a worked scorecard on real retail data that shows why a target that ignores seasonality turns every peak month green.
Building Confidence for Technical Interviews
Interview nerves are not the problem; how you interpret them is. Experiments show people who reframe anxiety as excitement perform better than those who try to calm down, and interview data shows candidates are poor judges of their own performance. This guide turns that into a routine.