2. Slides or presentation of Crystal language - nob-suz/crystal GitHub Wiki
Crystal programming Language is developped by Manas Tech Corp. in Argentina(from 2012/9）。 http://manas.com.ar/tools/
#Introduction Crystal to WorldWide
2013/2 Japan:Twitter https://twitter.com/yahhonob/status/300086409954471936
2013/8 Japan:Crystal - Ruby風文法を持ったコンパイル型言語 http://blog.wktk.co.jp/ja/entry/2013/08/28/crystal
2013/9 Japan Rubyっぽいシンタックスが使えるコンパイラ言語「Crystal」 http://www.softantenna.com/wp/software/crystal-language/
2014/3 STL Ruby(USA) The Crystal Programming Language https://www.youtube.com/watch?v=8BdLttM26V0 https://github.com/booch/presentations/tree/master/crystal
2014/9 WISIT 2014 - Borenszweig, Wajnermany Cardiff El lenguaje de programación Crystal https://www.youtube.com/watch?v=XGJh6rNAYfs
2014/12 Blog： Chicken’s Blog ^_^ at Vietnam
Crystal: Getting Started http://codeforfoods.net/blog/2014/11/27/crystal-getting-started/
Crystal: Syntax and Semantics Part 2 http://codeforfoods.net/blog/2014/12/04/crytal-syntax-and-semantics-part-2/
Erik Michaels at Ober(SFerik) is introducing Crystal everywhere this year,he was awarded to RubyHero2014.
2015/1 Berlin Strange Group ： Erik Michaels-Ober： The Crystal language and Functional Programming in Swift： http://www.meetup.com/Strange-Group-Berlin/events/219492917/
2015/3 RUG::B Ruby User Group Berlin by Erik Michaels at Ober Kamil Lelonek , CTO at woumedia The Crystal Programming Language A brief introduction to Crystal language http://www.slideshare.net/squixy/crystal-45694037 http://berlin.onruby.de/topics/the-crystal-programming-language?locale=es
2015/3 China OSChina.net [编译型的编程语言 Crystaｌ] (http://www.oschina.net/p/crystal-lang)
2015/5 RubyC: Rubyc is the major Ukrainian conference devoted to Ruby and Ruby on Rails
Erik Michaels-Ober (Germany) :Crystal programming language https://www.youtube.com/watch?v=iyqURh5LSF4
Svitla Ruby Conference-2015 presents full video and photo report! http://rubyc.eu/posts/36
2015/6 Lightning Talk about Crystal for RailsGirls by Stefan Wille(in Berlin) https://github.com/stefanwille/crystal-lightning-talk/blob/master/slides/Crystal%20Lightning%20Talk.md
2015/6 REDDIT: Of the emerging systems languages Rust, D, Go, Nim, and Crystal which is the strongest language and why? http://www.reddit.com/r/programming/comments/396c95/of_the_emerging_systems_languages_rust_d_go_nim/
2015/6 Japan Crystal 入門 http://qiita.com/rosylilly/items/377562cf934f4e1379c8
2015/6 Japan Crystal + HTTP Server http://qiita.com/rosylilly/items/49f4cb72c98a5b92b7f0
2015/6 Japan Make a Lisp で Lisp 処理系を学んでつくる (with Crystal) http://rhysd.hatenablog.com/entry/2015/06/11/212141
2015/6 Japan: Crystalの型を限定した配列と多機能な暗黙のto_proc #crystal #ruby http://qiita.com/tbpgr/items/e009b337d891fc2b6280
2015/6 Japan: Crystal と CRuby でHTTPサーバのベンチマーク http://mattn.kaoriya.net/software/lang/ruby/20150618020626.htm
2015/6 Japan: Rubyベースの文法で高速に動作するNativeコードにコンパイルされるCrystal言語の情報まとめ #crystal #ruby http://tbpgr.hatenablog.com/entry/2015/06/18/235914
2015/6 Japan: CrystalとGoでHTTPサーバのベンチマーク http://qiita.com/sudix/items/b7e17c9d41ae0253dec6
2015/6 Japan: Crystal + Amethystの導入からちょっとしたWebApp作成まで http://qiita.com/HKDnet/items/64133e9c68069d68e944
2015/6 Japan: Ruby風の文法でかけるcrystalが面白そうだったので、ベンチマークしてみた http://postmaster.hatenablog.com/entry/2015/06/21/190003
2015/6 Japan: [Quiita Blogs Tag:Crystal] (http://qiita.com/search?utf8=%E2%9C%93&q=tag%3Acrystal&sort=created)
2015/6 Japan: Ruby 風シンタックスな静的言語 Crystal の紹介 http://www.slideshare.net/pine613/ruby-crystal
2015/7 PolyConf2015 Poland: An Introduction to Crystal by Erik Michaels-ober http://polyconf.com/
2015/7 JULY 6-7th CURRY ON Prague! http://curry-on.org/
Crystal: a programming language for humans and computers http://2015.ecoop.org/event/curryon-crystal-a-programming-language-for-humans-and-computers
CURRY On is a co-operating session of ECOOPE Prague 2015. it will always be co-located with one of the top academic conferences in programming languages. This year, it's co-located with ECOOP. http://2015.ecoop.org/