This is not intended to be comprehensive or authoritative, just free online resources I've found valuable while learning more about Erlang. 

## Similar lists
* [0xAX's list of Erlang bookmarks](https://github.com/0xAX/erlang-bookmarks/blob/master/ErlangBookmarks.md)
* [Federico Carrone, Erlang Spawned Shelter](https://github.com/pyotrgalois/spawnedshelter)

## Instruction
* [Erlang Master Classes (videos)](https://www.cs.kent.ac.uk/ErlangMasterClasses/)
* [Learn You Some Erlang](http://learnyousomeerlang.com)
* [Erlang in Anger](http://www.erlang-in-anger.com)
* [Erlang Handbook: A concise reference for Erlang](http://opensource.erlang-solutions.com/erlang-handbook/)
* [Concurrent Programming in Erlang / Part 1 (PDF)](http://www.erlang.org/download/erlang-book-part1.pdf)
* [Try Erlang (hands-on web-based demo)](http://www.tryerlang.org/)
* [Erlang for C, C++ and Java Programmers (very short overview)](http://www.tamale.net/erlang/tutorial.shtml)
* [Thinking in Erlang](http://www.scribd.com/doc/44221/Thinking-in-Erlang)
* [Joe Armstrong's Ph.D. thesis (PDF)](http://www.sics.se/~joe/thesis/armstrong_thesis_2003.pdf)
* [Introduction to Erlang blog series](http://trigonakis.com/blog/series/introduction-to-erlang/)
* [The Architecture of Open Source Applications: Riak and Erlang/OTP](http://www.aosabook.org/en/riak.html)
* [Getting Started with Erlang User's Guide](http://www.erlang.org/doc/getting_started/users_guide.html)
* [OTP Design Principles User's Guide](http://www.erlang.org/doc/design_principles/users_guide.html)

## Documentation
* [Official Erlang docs](http://erlang.org/doc/)
* [Alternative presentation of Erlang docs](http://erldocs.com)
  * This site is particularly useful if you need to check docs for older versions of Erlang/OTP
* [Inside the Erlang VM with focus on SMP (PDF)](http://www.erlang.se/euc/08/euc_smp.pdf)


## Community
* [Erlang Solutions](https://www.erlang-solutions.com)
* [ErlangCentral](https://erlangcentral.org)
* [Erlware](http://www.erlware.org)
* [Planet Erlang](http://www.planeterlang.org)

## Mailing lists
* [Erlang questions](http://erlang.org/mailman/listinfo/erlang-questions)
* [Erlang.org list of lists](http://www.erlang.org/static/doc/mailinglist.html)

## Advocacy
* [Erlang: The Movie](http://www.youtube.com/watch?v=xrIjfIjssLE)
* [Erlang is not a Concurrent Functional Programming Language](http://www.javalimit.com/2011/05/erlang-is-not-a-concurrent-functional-programming-language.html)
* [Systems that Run Forever Self-heal and Scale: Lambda Jam keynote by Joe Armstrong](http://www.infoq.com/presentations/self-heal-scalable-system)
* [Erlang's Open Telecom Platform (OTP) Framework: QCon talk by Steve Vinoski](http://www.infoq.com/presentations/Erlang-OTP-Behaviors)
* [Erlang – A survey of the language and its industrial applications (PostScript)](http://www.erlang.se/publications/inap96.ps)
* [Why Erlang Is Awesome](http://veldstra.org/whyerlang/)
* [When would you choose Erlang?](http://blog.troutwine.us/2013/07/10/choose_erlang.html)
* [Erlang's Big Idea](http://www.sportshacker.net/posts/erlang_big_idea.html)

## Style
* [Solving Embarrassingly Obvious Problems In Erlang](http://www.gar1t.com/blog/solving-embarrassingly-obvious-problems-in-erlang.html)
* [More Embarrassingly Obvious Problems](http://www.gar1t.com/blog/2012/11/11/more-embarrassingly-obvious-problems/)
* [Programming Rules and Conventions (incomplete)](http://www.erlang.se/doc/programming_rules.shtml)

## Projects
* [GitHub Erlang repositories](https://github.com/search?l=Erlang&q=erlang&source=c&type=Repositories)
* [Comprehensive Erlang Archive Network (unclear if still active)](http://cean.process-one.net)

## Exercises
* [Études for Erlang](http://chimera.labs.oreilly.com/books/1234000000726)
* [Erlang Programming Exercises](http://www.erlang.org/course/exercises.html)
* [Exercism](http://exercism.io)

### General FP(ish) exercises
* [Project Euler](http://projecteuler.net)
* [Programming Praxis](http://programmingpraxis.com)
* [Rosalind](http://rosalind.info/problems/list-view/)
* [Sphere](http://www.spoj.com)
* [CodeKata](http://codekata.pragprog.com)
* [HackerRank](https://www.hackerrank.com)

## Alternative languages targeting the Erlang VM
* [Joxa](http://joxa.org)
* [Lisp-flavored Erlang (LFE)](http://lfe.io)
* [Elixir](http://elixir-lang.org)
* [The Concurrent Schemer (CSCM)](http://the-concurrent-schemer.github.io/scm-doc/)
* [Efene/Ifene](https://github.com/marianoguerra/efene)

### Erlang(-like) environments on the JVM
* [Erjang](https://github.com/trifork/erjang/wiki)
* [Quasar](http://www.paralleluniverse.co/quasar/)
* [Akka](http://akka.io)

### Other Actor implementations
* [Pony](http://www.ponylang.org)
* [Orleans](http://dotnet.github.io/orleans/)
* [Akka.NET](http://getakka.net)
* [CAF - C++ Actor Framework](http://actor-framework.org)

## Erlang-heavy blogs
* [Joe Armstrong on GitHub](http://joearms.github.io) and [Blogspot](http://armstrongonsoftware.blogspot.com)
* [Jesper L. Andersen on Medium](https://medium.com/@jlouis666) and [Blogspot](http://jlouisramblings.blogspot.de)
* [Paolo D’Incau](http://pdincau.wordpress.com)
* [Takeru OHTA](http://sile.hatenablog.jp) (Japanese)
  * See also http://qiita.com/sile
* [Ward Bekker](http://blog.equanimity.nl/blog/categories/erlang/)

## Software patterns
* [Erlang Patterns](http://www.erlangpatterns.org)

### Actor patterns (currently only Akka resources)
* [Enterprise application integration patterns for Akka actors](https://vaughnvernon.co/?tag=eai-patterns-actor-model)
* [Learnings from Actor Development](http://blog.chariotsolutions.com/2011/07/learnings-from-actor-development.html)

## History
* [LFE-Related History](http://docs.lfe.io/history.html)

## Papers
### Erlang
* [History of Erlang](http://dl.acm.org/citation.cfm?id=1238850)
* [One Pass Real-Time Generational Mark-Sweep Garbage Collection (1995)](http://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.7791)
* [The development of Erlang (PDF)](http://erlang.se/publications/icfp97.pdf)
* [Implementing a functional language for highly parallel real time application (PostScript)](http://www.erlang.se/publications/implem.ps)
* [Erlang - A survey of the language and its industrial applications (1996)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.146.5459)
* [An Introduction to Core Erlang (PostScript)](http://www.erlang.se/workshop/carlsson.ps)
* [Bjarne Däcker's thesis (2000)](http://www.erlang.se/publications/bjarnelic.pdf)
* [Comparison of Erlang Runtime System and Java Virtual Machine (PDF)](http://ds.cs.ut.ee/courses/course-files/To303nis%20Pool%20.pdf)
* [Testing Erlang Concurrency with QuickCheck](http://publications.lib.chalmers.se/records/fulltext/146291.pdf)
  * Note: QuickCheck is commercial software, but tremendously powerful and accessible as a web resource via [QuickCheck CI](http://quickcheck-ci.com)

### Actor model (and similar)
* [Actor Model of Computation: Scalable Robust Information Systems / Hewitt, 2012 (PDF)](http://arxiv.org/pdf/1008.1459.pdf)
* [The Actor Model (video)](http://channel9.msdn.com/Shows/Going+Deep/Hewitt-Meijer-and-Szyperski-The-Actor-Model-everything-you-wanted-to-know-but-were-afraid-to-ask)
* [Actors and Continuous Functionals / Hewitt & Baker, 1977 (PDF)](http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TR-194.pdf)
* [A Universal Modular ACTOR Formalism for Artificial Intelligence / Hewitt, Bishop, Steiger, 1973 (PDF)](http://worrydream.com/refs/Hewitt-ActorModel.pdf)
* [Actor-Oriented Models for Codesign (PDF)](http://ptolemy.eecs.berkeley.edu/publications/papers/04/FormalCodesign/FormalCodesign.pdf)
* [ACTORS: A Model of Concurrent Computation in Distributed Systems / Agha, 1985](http://dspace.mit.edu/handle/1721.1/6952)

### Process calculus
#### Communicating Sequential Processes (CSP)
* [An Introduction](http://chplib.wordpress.com/2009/11/16/an-introduction-to-communicating-sequential-processes/)
* [Hoare's book (PDF)](http://www.usingcsp.com/cspbook.pdf)
* [Hoare's paper / 1978 (PDF)](http://www.cs.ucf.edu/courses/cop4020/sum2009/CSP-hoare.pdf)

#### π-calculus

* [*Relation to Pi Calculus* from `erlang-questions`](http://erlang.org/pipermail/erlang-questions/2003-November/010783.html)
* [Modeling Erlang in the Pi–Calculus (PDF)](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.113.3913&rep=rep1&type=pdf)
* [π-calculus (Wikipedia)](http://en.wikipedia.org/wiki/Π-calculus)


## Misc
* [Erlang Cookbook: collaborative code snippets at ErlangCentral](https://erlangcentral.org/wiki/index.php?title=Category:CookBook)
* [Mostly Erlang (podcast)](http://mostlyerlang.com)
* [Erlang interviews and resources](http://pdincau.wordpress.com/category/erlang/)
* [Akka team blog](http://letitcrash.com)
* [Why Do Computers Stop and What Can Be Done About It? / Gray, 1985 (PDF)](http://www.hpl.hp.com/techreports/tandem/TR-85.7.pdf)

## Slide decks
* [Erlang in Production](http://yowconference.com.au/slides/yowlambdajam2013/Duggan-Erlang.pdf)

## Twitter
Twitter seems to be the de facto water cooler for technical conversations, and Erlang is no exception.

There are far more active accounts than I can comfortably list here; these are just a few of the more interesting ones.

* [Erlang Factory](https://twitter.com/erlangfactory)
* [Erlang Solutions](https://twitter.com/ErlangSolutions)
* [Robert Virding](https://twitter.com/rvirding)
* [Joe Armstrong](https://twitter.com/joeerl)
* [Paolo D’Incau](https://twitter.com/pdincau)
* [Eric Merritt](https://twitter.com/ericbmerritt)
* [Francesco Cesarini](https://twitter.com/FrancescoC)
* [Bryan Hunter](https://twitter.com/bryan_hunter)
* [Ram C Singh](https://twitter.com/RamCSingh)
* [Totally Erlang](https://twitter.com/totallyerlang)
* [Brian L Troutwine](https://twitter.com/bltroutwine)
* [ErlangInfo](https://twitter.com/ErlangInfo)
* [Takeru OHTA](https://twitter.com/reduls)