> For the complete documentation index, see [llms.txt](https://a.b.cr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://a.b.cr/textbook/serials/a-real-time-cryptocurrency-ticker-dashboard/0-some-preparation.md).

# 0 - Some Preparation

If you are a pro, you may skip this chapter