• R Reference card for Data Mining [PDF];
• R and Data Mining: Examples and Case Studies [PDF] [R code];
  
• Introduction to Data Mining with R [PDF]; and
  
• Time Series Analysis and Mining with R [PDF].

• data exploration;
  
• decision trees;
• k-means clustering and hierarchical clustering;
• outlier detection;
  
• time series decomposition and forecasting;
  
• time series clustering and classification;
• association rules;
  
• text mining;
  
• social network analysis;
• parallel computing; and
• other examples.

Tutorials on R and data mining are provided, including

• building an R Hadoop system; and
• Hadoop: from single-node mode to cluster mode

• free online documents, tutorials and slides;
• free online courses;
  
• free datasets; and
• open-source tools.