There are lots of online modules for data wrangling, such as cleaning dirty data, R, Tabula, APIs, OpenRefine and more.
Many tutorials are covered under data related topics including:
- Data Fundamentals
- Data Cleaning
- Exploring Data
- Extracting Data
- Collecting Data
- Presenting Data
Each major topic contains a number of tutorials - each with explanations, summaries, reading and quizzes.
For example, for extracting data you know the data you need is somewhere out there on the Web, but how do you get it on your computer? This course will lead you to:
- Extracting data from PDFs
- Making data on the web useful: scraping
Online courses offered through international universities. These courses are free or you can pay for certification. Courses include Deep Learning, Data Science, Python, Machine Learning, Algorithms and Data Structures.