Study sources

Back-end:
  Ruby / Rails:
    Guides:
      http://guides.rubyonrails.org/
      https://api.rubyonrails.org/
      https://apidock.com/ruby/

    Books (Free):
      (pt-BR) https://leanpub.com/conhecendo-ruby

    Books (Paid):
      (pt-BR) https://www.casadocodigo.com.br/products/livro-ruby (pt-BR)
      (pt-BR) https://www.casadocodigo.com.br/products/livro-ruby-on-rails (pt-BR)
      (pt-BR) https://www.casadocodigo.com.br/pages/sumario-refatoracao-ruby (pt-BR)
      https://www.poodr.com/
      https://pragprog.com/book/ppmetr2/metaprogramming-ruby-2
      http://patshaughnessy.net/ruby-under-a-microscope

    Courses (Free):
      https://thoughtbot.com/upcase
      https://www.rubytapas.com/category/freebies/
      https://www.pluralsight.com/courses/ruby-fundamentals (Trial)

    Blogs/Interesting posts:
      https://www.sitepoint.com/ruby/
      http://www.akitaonrails.com

    Talks:
      https://confreaks.tv/videos/rubymidwest2011-keynote-architecture-the-lost-years
      https://confreaks.tv/videos/railsconf2014-all-the-little-things
      https://confreaks.tv/videos/railsconf2015-nothing-is-something

    Podcasts:
      http://5by5.tv/rubyonrails
      http://devchat.tv/ruby-rogues/

    Newsletter:
      https://rubyweekly.com

--------------------------

Tests, TDD, Specs, Cucumber:
  Books (Paid):
    (pt-BR) https://www.casadocodigo.com.br/products/livro-cucumber-rspec-tdd-bdd
    (pt-BR) https://www.casadocodigo.com.br/products/livro-tdd-ruby
    (pt-BR) https://www.casadocodigo.com.br/products/livro-rspec

  Blogs/Interesting posts:
    https://martinfowler.com/articles/mocksArentStubs.html

  Articles:
    http://jmock.org/oopsla2004.pdf

--------------------------

Front-end:
  Vue.js:
    Guides:
      http://codepop.com/Vue-Essentials-Cheat-Sheet.pdf
      https://medium.freecodecamp.org/the-vue-handbook-a-thorough-introduction-to-vue-js-1e86835d8446

    Newsletter:
      https://news.vuejs.org/

  UX:
    (pt-BR) https://www.amazon.com.br/N%C3%A3o-fa%C3%A7a-pensar-Steve-Krug/dp/8576088509/ref=sr_1_1?ie=UTF8&qid=1543578215&sr=8-1&keywords=don%27t+make+me+think
    https://www.goodreads.com/book/show/18197267-don-t-make-me-think-revisited

  WebAssembly:
    Posts:
      https://hacks.mozilla.org/2017/02/a-cartoon-intro-to-webassembly/

--------------------------

Misc:
  Patterns:
    https://sourcemaking.com/antipatterns

  Courses:
    (pt-BR) https://onebitcode.com/

  Books (Paid):
    https://www.manning.com/books/grokking-algorithms
    https://www.amazon.com.br/Mythical-Man-Month-Anniversary-Engineering-Documents-ebook/dp/B00B8USS14?tag=goog0ef-20&smid=A18CNA8NWQSYHH&ascsubtag=go_1366271959_58245915327_265589414315_pla-563122679951_c_
    https://www.amazon.com.br/Robert-Martin-Clean-Collection-English-ebook/dp/B00666M59G?tag=goog0ef-20&smid=A18CNA8NWQSYHH&ascsubtag=go_1366271959_58245915327_265589414315_aud-519888259198:pla-509430280503_c_
    https://pragprog.com/titles/category/7in7?f[sort_by]=pubdate&f[category]=7in7&f[skill_level]=All&f[title_contains]=

  Talks:
    https://confreaks.tv/

  Podcasts:
    (pt-BR) http://www.loopmatinal.com/
    (pt-BR) https://hipsters.tech/
    (pt-BR) https://devnaestrada.com.br/

  Videos / channels:
    http://akitando.com

--------------------------

Music:
  Talks/Videos:
    https://www.youtube.com/watch?v=MOUkI5hH2HY (Not just about music, but about industries and mastering what you work with/love
    https://www.youtube.com/watch?v=YNZQfdsbaq8
    https://www.youtube.com/watch?v=y9LTtqRKwrA
    https://www.youtube.com/channel/UCpKb02FsH4WH4X_2xhIoJ1A

  Programming:
    Posts:
      http://www.martin-finke.de/blog/articles/audio-plugins-001-introduction/
    Blogs:
      https://twitter.com/audioprogrammer

    Open source:
      https://github.com/mtytel/helm
      http://mda.smartelectronix.com/ *
      https://juce.com/ *
      *Thank you Steve Duda for these recommendations! Check out xferrecords.com for high quality music production plugins.

    Books:
      http://www.dspguide.com/pdfbook.htm