https://github.com/yangshun/tech-interview-handbook
https://github.com/MaximAbramchuck/awesome-interview-questions
https://www.youtube.com/watch?v=nZNfSQKC-Yk
https://medium.com/how-i-learned-ruby-rails/how-i-trained-to-learn-rails-e08c94e2a51e#.hb64getuy
https://medium.com/ruby-on-rails/how-i-finally-learned-rails-95e9b832675b#.wkzetkhty
Reddit post: How I learned Rails from absolute scratch — and got to the point where I get offered jobs
https://www.reddit.com/r/rails/comments/364s5w/how_i_learned_rails_from_absolute_scratch_and_got/
https://www.reddit.com/r/ruby/comments/2zlcyc/tips_on_becoming_a_ruby_expert/
https://thoughtbot.com/upcase/practice
https://www.reddit.com/r/ruby/
https://www.reddit.com/r/rails/
https://www.youtube.com/user/RailscastsReloaded
https://www.codemy.net/channels/rails-foundation
https://rubythursday.com/start-here
https://www.youtube.com/channel/UCxlRo6PM3QmRWJa-HTA0tMg
https://www.youtube.com/user/Confreaks
http://apionrails.icalialabs.com/book/chapter_one
https://www.railstutorial.org/book
https://www.amazon.com/Well-Grounded-Rubyist-David-Black/dp/1617291692
https://www.amazon.com/Practical-Object-Oriented-Design-Ruby-Addison-Wesley-ebook/dp/B0096BYG7C/
https://www.amazon.com/Effective-Ruby-Specific-Software-Development-ebook/dp/B00NEOERH6/
http://blog.fullstory.com/2016/04/code-reviews-arent-just-for-catching-bugs/
https://viget.com/extend/slack-on-rails
http://www.cloudcity.io/blog/2015/07/10/how-bundler-works-a-history-of-ruby-dependency-management/
http://technopadia.com/ruby-gems/
http://ducktypelabs.com/using-scope-with-associations/
https://workshop.masterofcode.com/three-phases-deployment-testing-cycle/
https://robots.thoughtbot.com/how-we-test-rails-applications
https://infinum.co/the-capsized-eight/articles/best-ruby-on-rails-refactoring-talks
http://www.sitepoint.com/active-model-serializers-rails-and-json-oh-my/
http://www.zenruby.info/2016/05/ruby-operators-equality-comparison.html
https://www.sitepoint.com/get-the-low-down-on-ruby-modules/
http://jetruby.com/expertise/common-ruby-rails-mistakes-beginners-make-model-database/
http://www.justinweiss.com/articles/a-web-server-vs-an-app-server/
https://phraseapp.com/blog/posts/last-rails-i18n-guide-youll-ever-need/
http://vaidehijoshi.github.io/blog/2015/08/18/safer-sql-using-activerecord-transactions/
https://launchschool.com/blog/rails-asset-pipeline-best-practices
http://www.mikeperham.com/2015/09/24/storing-data-with-redis/
http://patshaughnessy.net/2012/2/15/is-ruby-interpreted-or-compiled
https://www.toptal.com/ruby/the-many-shades-of-the-ruby-programming-language
https://www.nopio.com/blog/angularjs-tutorial/
https://www.sitepoint.com/10-ruby-on-rails-best-practices-3/
https://blog.codeship.com/improving-rails-performance-better-background-jobs/
https://www.sitepoint.com/dry-off-your-rails-code-with-activesupportconcerns/
http://blog.carbonfive.com/2016/11/16/rails-database-best-practices/
http://codebeerstartups.com/2014/11/scaling-ruby-on-rails-by-caching-your-database-queries/
http://www.blackbytes.info/2016/01/ruby-tricks/?utm_source=rubyweekly&utm_medium=email
https://www.sitepoint.com/geocoder-display-maps-and-find-places-in-rails/
http://blog.honeybadger.io/how-to-globally-disable-rdoc-and-ri-during-gem-installs/
https://everydayrails.com/2011/04/28/rails-try-method.html
http://tech.honestbee.com/articles/ruby%20on%20rails/2017-01/getting-your-rails-setup-right
http://matthewlehner.net/rails-api-testing-guidelines/
http://solnic.eu/2016/11/02/duck-typing-vs-type-safety-in-ruby.html
http://semaphoreci.com/blog/2017/03/14/faster-rails-how-to-check-if-a-record-exists.html
https://spin.atomicobject.com/2014/09/03/visualizing-garbage-collection-algorithms/
https://www.sitepoint.com/deploy-your-rails-app-to-aws/
https://www.schneems.com/2017/04/12/jumping-off-the-memory-cliff/
http://www.blackbytes.info/2017/04/stop-using-case-statements-in-ruby/
http://rubyjunky.com/cleaning-up-rails-4-production-logging.html
http://thelazylog.com/understanding-locking-in-rails-activerecord/
http://jakeyesbeck.com/2017/07/12/a-few-rspec-helpful-hints/
http://myprogrammingblog.com/2015/12/21/10-ways-how-to-speed-your-unit-tests-rails-rspec-capybara/
http://mitrev.net/ruby/2015/11/13/the-operator-in-ruby/
http://mitrev.net/ruby/2015/08/28/benchmarking-ruby/
https://engineering.universe.com/introduction-to-concurrency-models-with-ruby-part-i-550d0dbb970
https://robots.thoughtbot.com/using-capybara-to-test-javascript-that-makes-http
https://schneems.com/2017/10/23/wtf-is-a-thread/
https://www.engineyard.com/blog/keeping-your-rails-controllers-dry-with-services
http://awaxman11.github.io/blog/2013/08/05/what-is-the-difference-between-a-block/
https://gorails.com/guides/rotating-rails-production-logs-with-logrotate
https://www.driftingruby.com/episodes/routing-partials
https://dalibornasevic.com/posts/68-processing-large-csv-files-with-ruby
https://www.delight.consulting/blog/deleting-massive-amounts-of-data-rails/
http://www.virtuouscode.com/2011/06/28/do-or-do-not-there-is-no-try/
https://engineering.grab.com/deep-dive-into-database-timeouts-in-rails
https://www.devmynd.com/blog/2015-1-pairing-with-junior-developers/
http://chris.beams.io/posts/git-commit/
https://stripe.com/blog/service-discovery-at-stripe
https://blog.codeship.com/continuous-integration-and-delivery-for-agile-teams/
http://rubyblog.pro/2016/10/decorator-pattern-and-usageof-simpledelegator
http://rubyofftherails.blogspot.com.br/
http://blog.honeybadger.io/ruby/
https://robots.thoughtbot.com/tags/rails
https://signalvnoise.com/posts/
https://www.jetbrains.com/ruby/help/rails.html
https://www.sitepoint.com/ruby/
https://medium.com/netflix-techblog
https://makandracards.com/makandra
https://www.youtube.com/watch?v=9LfmrkyP81M
https://www.youtube.com/watch?v=xMFs9DTympQ
https://www.youtube.com/watch?v=ktZLpjCanvg
https://www.youtube.com/watch?v=x8Xxie10Qns
https://www.youtube.com/watch?v=qf6abZeAJh4
https://www.youtube.com/watch?v=OQoYTeGJYf4
https://www.youtube.com/watch?v=AuKn65E8T3w
https://www.youtube.com/watch?v=7uKxDVflXdI
https://www.youtube.com/watch?v=kZcqyuPeDao
https://www.youtube.com/watch?v=d54B3G-CPbo
https://www.driftingruby.com/episodes/redis-basics
https://github.com/plataformatec/devise/
https://github.com/elabs/pundit
https://github.com/activerecord-hackery/ransack
https://github.com/elastic/elasticsearch-rails
https://github.com/ankane/ahoy
https://github.com/rspec/rspec-rails
https://github.com/colszowka/simplecov
https://github.com/teamcapybara/capybara
https://github.com/deivid-rodriguez/byebug
https://github.com/rweng/pry-rails
https://github.com/michaeldv/awesome_print
https://github.com/capistrano/capistrano
https://github.com/kickstarter/rack-attack
https://github.com/schneems/derailed_benchmarks
https://github.com/carrierwaveuploader/carrierwave
https://github.com/zdavatz/spreadsheet
https://github.com/weshatheleopard/rubyXL
https://github.com/mikemarsian/serially
https://github.com/Shopify/identity_cache
https://github.com/thoughtbot/administrate (Like RailsAdmin and ActiveAdmin but must more customizable)
https://github.com/sferik/rails_admin
https://github.com/activeadmin/activeadmin
https://github.com/cortiz/prawn-rails
https://github.com/mileszs/wicked_pdf
https://github.com/cantino/huginn
https://github.com/atinfo/awesome-test-automation
https://github.com/bbatsov/ruby-style-guide
https://github.com/github/scientist
https://github.com/sunspot/sunspot
https://github.com/dejan/rails_panel
The following is hardly a limitative list of products and tools.
https://www.jetbrains.com/ruby/ - this is an actively developed cross-platform plugin-based IDE derived from their IntelliJ IDEA product that runs on macOS, a number of linux distrubtions and on Windows. The people at JetBrains are pretty responsive to their user community. It's possible to try out their IDE for 30 days, after that you have to buy a license from them. Has excellent support for Ruby and for Rails just to mention a few. It's possible to add functionality by installing from a large collection of plugins.
http://www.sublimetext.com/ - really a super fast cross-platform package-based editor. Runs on macOS, a number of linux distrubtions and on Windows. Their package system is based on Python. Sublime Text is able to support a large number of languages and dialects.
http://atom.io/ - Open-source JavaScript package-based cross-platform editor that is easily hackable to adjust it to your taste. Comes with a package manager.
https://www.gnu.org/software/emacs/ - Everything including the kitchensink.
https://vim.sourceforge.io - Open-source improved vi.
https://github.com/papers-we-love/papers-we-love
https://github.com/jwasham/google-interview-university
https://github.com/wearehive/project-guidelines
https://github.com/bmorelli25/Become-A-Full-Stack-Web-Developer
https://github.com/trimstray/test-your-sysadmin-skills
https://github.com/danistefanovic/build-your-own-x
https://gist.github.com/kyletcarlson/6234923
https://github.com/franzejr/best-ruby
-
Software engineering daily: https://softwareengineeringdaily.com/category/podcast/
-
Iteration podcast: http://www.iterationpodcast.com/
-
The Ruby Testing Podcast: http://www.rubytestingpodcast.com/
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The Accidental Engineer: https://theaccidentalengineer.com/
Stephanie Hurlburt: https://twitter.com/sehurlburt
Jeff Atwood: https://twitter.com/codinghorror
Scott Hanselman: https://twitter.com/shanselman
Gary Bernhardt: https://twitter.com/garybernhardt
Sarah Mei: https://twitter.com/sarahmei
Aaron Patterson: https://twitter.com/tenderlove
Gregory Brown: https://twitter.com/practicingdev
Sandi Metz: https://twitter.com/sandimetz
Richard Schneeman: https://twitter.com/schneems
Avdi Grimm: https://twitter.com/avdi
Nick Quaranto: https://twitter.com/qrush
James Edward Gray II: https://twitter.com/JEG2
Eileen M. Uchitelle: https://twitter.com/eileencodes
Justin Searls: https://twitter.com/searls
Sean Griffin: https://twitter.com/sgrif