Add reference to required reading in implementing guide

ErikSchierboom · mirkoperillo · commit 5c92fe7d5734 · 2021-01-30T15:05:29.000+01:00
[Docs] Add reference to required reading in implementing guide
diff --git a/reference/implementing-a-concept-exercise.md b/reference/implementing-a-concept-exercise.md
@@ -1,6 +1,14 @@
 # How to implement a Java Concept Exercise
 
-This document describes how to implement a Concept Exercise for the Java track. As this document is generic, the following placeholders are used:
+This document describes how to implement a Concept Exercise for the Java track.
+
+**Please please please read the docs before starting.** Posting PRs without reading these docs will be a lot more frustrating for you during the review cycle, and exhaust Exercism's maintainers' time. So, before diving into the implementation, please read the following documents:
+
+- [The features of v3][docs-features-of-v3].
+- [Rationale for v3][docs-rationale-for-v3].
+- [What are concept exercise and how they are structured?][docs-concept-exercises]
+
+As this document is generic, the following placeholders are used:
 
 - `<slug>`: the name of the exercise in snake_case (e.g. `anonymous-methods`).
 - `<concepts>`: the Concepts the exercise is about (e.g. `loops`),
@@ -132,4 +140,7 @@ If you have any questions regarding implementing the exercise, please post them
 [representer]: https://github.com/exercism/java-representer
 [concept-exercises]: ../exercises/concept/README.md
 [how-to-implement-a-concept-exercise]: ../../../docs/maintainers/generic-how-to-implement-a-concept-exercise.md
+[docs-concept-exercises]: ../../../docs/concept-exercises.md
+[docs-rationale-for-v3]: ../../../docs/rationale-for-v3.md
+[docs-features-of-v3]: ../../../docs/features-of-v3.md
 [reference]: ../../../reference/README.md
