Here is a selection of my Data Science and Programming skills and tools that turned out to be helpful in my work and I believe are important for any Data Scientist as well. The last update of this post was done: 2018-01-24. Data Science Skills Data Manipulation
Efficient data manipulation in R; dplyr, data.table, reshape2. Working with dates and time-series; lubridate, xts.
RStudio IDE, Markdown, LaTeX;