diff --git a/NewbieDeveloperSetup.md b/NewbieDeveloperSetup.md
index 5b9c066..1904851 100644
--- a/NewbieDeveloperSetup.md
+++ b/NewbieDeveloperSetup.md
@@ -23,4 +23,6 @@ m. Learn to use the [logging system](https://tahoe-lafs.org/trac/tahoe-lafs/brow
 
 n. Learn [how to submit patches](Patches)
 
-o. Dive into the code! See some [tips for diving into Tahoe's source code](https://tahoe-lafs.org/pipermail/tahoe-dev/2012-May/007337.html) and follow the [coding standards](CodingStandards) when you're ready to code.
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+o. Dive into the code! See some [tips for diving into Tahoe's source code](https://tahoe-lafs.org/pipermail/tahoe-dev/2012-May/007337.html) and follow the [coding standards](CodingStandards) when you're ready to code.
+
+p. Learn [how to write tests](HowToWriteTests). Patches and new code should pass the automated testing before being eligible to be merged (see [this comment](/tahoe-lafs/trac-2024-07-25/issues/7573)#comment:88). There is a [list of patches needing tests](https://tahoe-lafs.org/trac/tahoe-lafs/query?status=!closed&keywords=~test-needed) if you want to get your feet wet.
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