> For the complete documentation index, see [llms.txt](https://patriq.gitbook.io/iota/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://patriq.gitbook.io/iota/development/tbd-1.md).

# Basics

Now we are going to learn the very basics. Knowing these basics will be sufficient for a variety of use cases. It is very important to understand them well as they can be considered the very *core* of development and furthermore, we will have to face them whenever we want to use IOTA in our code.