This site is an unofficial solutions guide for the exercises in An Introduction to Statistical Learning: with Applications in R by Gareth James, Daniela Witten, Trevor Hastie and Robert Tibshirani. You can grab a free pdf of the book from the official site or you can purchase a physical copy from Amazon or Springer.

Code excerpts are inlined in the solution guide for each chapter but you can get the source code from the Github repository too. If you spot any errors feel free to issue a pull request!