libgdx wiki

libgdx homepage

https://libgdx.badlogicgames.com/index.html

libgdx wiki

https://github.com/libgdx/libgdx/wiki

libgdx tutorial

http://blog.sina.com.cn/s/articlelist_2483934474_0_2.html
http://www.jizhuomi.com/android/game/359.html

libgdx cookbook

https://github.com/saltares/libgdx-cookbook