L1
Honest Take — Before You Begin
Honest reflections on the runtime that was twenty years ahead of its time
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Course · 5 lessons
~48 hr
Intermediate
Erlang Foundations & the BEAM
Erlang Foundations & the BEAM covers: Programming Erlang, Erlang and OTP in Action. Understand Erlang well enough to read Erlang code, use Erlang libraries from Elixir, and deeply understand the BEAM VM that runs both languages. Elixir is syntax on top of the BEAM — understanding Erlang deepens everything.
reading · we frame, you read MIT or the canonical
taught · we author, no canonical fits
↺ spirals back to earlier lessons
Course locked
Complete OTP — The Superpower first.
This course unlocks once you've finished its prerequisite. Open prerequisite →
L2
Programming Erlang: The Creator's Tour of the BEAM
Every Elixir module you have written this path compiles to the same bytecode format as code written in 1998 for telephone switches that were not allowed to go down. The runtime sc…
primary
Learn You Some Erlang (website)
locked
L3
Erlang and OTP in Action: The Patterns Beneath Your Supervisor
In Course 3 you typed use GenServer and a dozen functions appeared out of nowhere — callbacks wired, defaults chosen, a behaviour contract enforced. Elixir's macro system made it …
primary
Learn You Some Erlang (website)
locked
L4
Module Checklist
Work through each item before the checkpoint.
locked
L5
Project: Circuit Breaker on :gen_statem
Build a production pattern — the circuit breaker — directly on Erlang's :genstatem, with no Elixir wrapper in between (there isn't one; that is the point). State functions, state …
locked
5 lessons. Read in order; spiral back when you need to. By the end you'll have used the core ideas twice — once on the abstract, once on something you'll meet at work next week.