I had been walked through IT world since 2000 as web programmer, network engineer (CCNA), system administration, database administration, infrastructure engineer and IT audit for public accounting.
The first time touched BI when I met my supervisor lecture on 1999, a Phd from Pierre and Marie Curie University. I learned statistics and the big world of IT.
since 2015 I focused in database. Start from basic as Excel data preparation from flat file, building data warehouse, deploying dashboard then at the end of 2017 jump to ETL with Pentaho and SSIS SQL Server. It was where I start learning Tableau and finished as data visualization with Power BI