> For the complete documentation index, see [llms.txt](https://haskell.hpmeducation.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://haskell.hpmeducation.com/introduction.md).

# Introduction

- [Functions](https://haskell.hpmeducation.com/introduction/functions.md)
- [Functional Programming vs Imperative Programming](https://haskell.hpmeducation.com/introduction/functional-programming-vs-imperative-programming.md)
- [Installing Haskell](https://haskell.hpmeducation.com/introduction/installing-haskell.md)
- [Haskell Modules](https://haskell.hpmeducation.com/introduction/haskell-modules.md)
- [Loading Modules into GHCi](https://haskell.hpmeducation.com/introduction/loading-modules-into-ghci.md)
- [Expressions](https://haskell.hpmeducation.com/introduction/expressions.md)
- [Laziness](https://haskell.hpmeducation.com/introduction/laziness.md)
- [Immutability](https://haskell.hpmeducation.com/introduction/immutability.md)