...you should not fall under Mr. Market's influence, but rather you should learn to take advantage of him...Benjamin Graham

Warning: for() loops are used in R code much less often than in compiled languages. Code that takes a ‘whole object’ view is likely to be both clearer and faster in R. p.41

http://stackoverflow.com/help/mcve

The Best tutorial:

data.table: https://github.com/Rdatatable/data.table/wiki/Getting-started

data.table vs dplyr: can one do something well the other can't or does poorly?

RSelenium: http://rpubs.com/johndharrison/12843, http://rpubs.com/johndharrison/RSelenium-headless, & http://rpubs.com/johndharrison/RSelenium-headless

Shiny: http://shiny.rstudio.com/tutorial/ & http://rstudio.github.io/shinydashboard/

nyc open data: https://nycopendata.socrata.com/