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diff --git a/README.md b/README.md
index a3630cb..15c5ae2 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,16 @@ apt install rebar3      # depends on erlang
 
 # Resources
 
+* https://www.erlang.org/doc/
+* https://www.erlang.org/doc/reference_manual
 * https://learnyousomeerlang.com/
 * https://adoptingerlang.org
 * https://www.jetbrains.com/help/idea/erlang-start-project.html
+
+# Notes
+
+* All nodes in system: `net_adm:names()`.
+* Show all processes and registered names: `i()`.
+  * ... on all nodes `ni()`.
+* Show all registered processes: `regs()`.
+* 
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