Update free-courses-pt_BR.md (#3179)

free-courses-pt_BR.md

@@ -1,6 +1,7 @@
 ### Index
 
 * [Git](#git)
+* [Go](#go)
 * [Ruby](#ruby)
 
 
@@ -9,6 +10,11 @@
 * [Git e Github para iniciantes](https://www.udemy.com/git-e-github-para-iniciantes/) - Willian Justen de Vasconcellos (Udemy)
 
 
+### Go
+
+* [Curso de Introdução a Linguagem Go (Golang)](https://www.youtube.com/playlist?list=PLXFk6ROPeWoAvLMyJ_PPfu8oF0-N_NgEI) - EuProgramador (YouTube)
+
+
 ### Ruby
 
 * [Curso de Ruby on Rails para Iniciantes](https://www.youtube.com/playlist?list=PLe3LRfCs4go-mkvHRMSXEOG-HDbzesyaP) - Jackson Pires (YouTube)