This book is devoted to ecological data analysis with R, with examples created by the same original developers of the described packages. R software is now an important reality in ecological informatics. Specific packages have been developed to manage, analyze, and visualize ecological data. This book is a comprehensive catalogue of ecological R packages with running examples. The frustration of seeing outputs without functions is now out, with this step-by-step procedure book, which is intended for students and researchers, with previous experience in R, who have passion with coding their own ecological analyses. The code is provided at: https://github.com/RCodingForEcology/ .