shorten time estimate

move the section further up, as recommended by @infinisil

source/tutorials/nix-language.md

@@ -54,32 +54,22 @@ See the [Nix manual][manual-language] for a full language reference.
 
 [manual-language]: https://nixos.org/manual/nix/stable/language/index.html
 
+### How long does it take?
+
+- No experience with functional programming: 2 hours
+- Familiar with functional programming: 1 hour
+- Proficient with functional programming: 30 minutes
+
+We recommend to run all examples.
+Play with them to validate your assumptions and test what you have learned.
+Read detailed explanations if you want to make sure you fully understand the examples.
+
 ### What do you need?
 
 - Familiarity with software development
 - Familiarity with Unix shell, to read command line examples <!-- TODO: link to yet-to-be instructions on "how to read command line examples" -->
 - [A Nix installation](./install-nix) to run the examples
 
-### How long does it take?
-
-- **No experience with functional programming: 2 hours**
-
-  Carefully work through all definitions and examples.
-
-  Make sure you understand them by reading all detailed explanations.
-
-- **Familiar with functional programming: 1 hour**
-
-  Learn syntax and semantics by examining definitions and examples, and read detailed explanations if in doubt.
-
-- **Proficient with functional programming: 30 minutes**
-
-  The Nix language is largely unsurprizing to experienced functional programmers.
-
-  Read through the guide to get accustomed to the syntax and language features.
-
-We recommend running all examples and playing with them to validate your assumptions and test what you have learned.
-
 ### How to run the examples?
 
 - Every valid piece of Nix language code is a *Nix expression*.