diff --git a/README.md b/README.md
index ca1419c..c4cc22d 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,14 @@ Generate a map similar to https://www.ccc.de/regional from Wikidata and the doku
 
 ![Map as generated by this tool](map.png)
 
+## Installation
+
+1. Create a Python virtualenv: `python3 -m virtualenv venv`
+1. Enable the virtualenv: `. venv/bin/activate`
+1. Install the dependencies: `pip install -r requirements.txt`
+
+Instead of following these steps, you could also install the dependencies from your OS' package manager.
+
 ## Usage
 
 For a quick test run, point the script at the cache.example directory:
@@ -14,7 +22,7 @@ For a quick test run, point the script at the cache.example directory:
 
 Find the result in the files `map.svg` and `map.png`.
 
-If the wrong font is used in the PNG, make sure the chosen font is installed on your system. ([CairoSVG](https://cairosvg.org/) does not support the use of `@font-face` in style sheets.)
+**If the wrong font is used in the PNG, make sure the chosen font is installed on your system.** ([CairoSVG](https://cairosvg.org/) does not support the use of `@font-face` in style sheets.)
 
 When not cache exists or forcing cache renewal, you need to provide the HTTP Basic Auth credentials to doku.ccc.de via an environment variable:
 
@@ -29,6 +37,8 @@ A run without cache takes some time as it fetches all data from their sources:
 1. Get a list of Erfas & Chaostreffs from the doku.ccc.de Semantic Mediawiki API.
 1. Resolve all POIs' (Erfas & Chaostreffs) street addresses' to geocoordinates using [Nominatim](https://nominatim.org/).
 
+**Use the cache at least for the country and state borders.  Otherwise, Wikidata will start rate limiting pretty quickly.** 
+
 ## Fonts
 
 The font contained in `style/concertone-regular.ttf` was created by Johan Kallas (johankallas@gmail.com) and is licensed unter the terms of the SIL Open Font License v1.10.