diff --git a/2019/README.md b/2019/README.md
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+# Advent of Code 2019
+
+https://adventofcode.com/2019
+
+## Language
+
+Implemented in [Rust](https://www.rust-lang.org/).
+
+## Preparation
+
+Install
+[Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html).
+
+## Running tests
+
+Run tests using `cargo`:
+
+```console
+cargo test
+```
diff --git a/2020/README.md b/2020/README.md
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+# Advent of Code 2020
+
+https://adventofcode.com/2020
+
+## Language
+
+Implemented in [Go](https://golang.org/).
+
+## Preparation
+
+Install [Go](https://golang.org/doc/install) for your platform.
+
+## Running tests
+
+Run tests with `go test`:
+
+```console
+go test ./...
+```