If you are looking to get started in the field of data science in 2014, then DataCamp just might be the site for you. DataCamp, formerly DataMind provides a tutorial for interactive data analysis in the browser. The data analysis is taught using R.
The DataCamp platform provides:
Courses to learn data science
A Platform to create new courses
If you are familiar with Codecademy, DataCamp follows very much the same model except for data analysis instead of programming. This is definitely a site to watch in 2014.