How to build a pivot table in Excel: the four field areas, grouping, slicers, calculated fields and the mistakes that produce wrong totals.
A Power BI tutorial for beginners: load data, clean it, build the model, write DAX measures and publish a dashboard, with a worked Indian...
SQL joins explained with syntax and examples: INNER, LEFT, RIGHT, FULL, CROSS and SELF joins, and which one to use when.
SQL database types explained: relational vs NoSQL, the main SQL data types, and which database an analyst actually works with in India.
DDL commands in SQL explained with syntax and examples: CREATE, ALTER, DROP, TRUNCATE and RENAME, and how they differ from DML.
23 data science interview questions with answers on machine learning, statistics, model evaluation and deployment, grouped fresher to advanced.
23 data analyst interview questions with answers across SQL, Excel, Power BI, statistics and business sense, grouped fresher to advanced.
SkilloVilla success stories in one page: named alumni, their previous roles, the companies they joined, and the salary jumps they reported.
How to build a data analyst portfolio that gets interviews: real Indian datasets you can download today, four worked project briefs, and repo guidance.
Python for data analysis explained for beginners: the four libraries that matter, pandas operations with exact syntax, and the workflow analysts use.
