Mixed effects models resources

These are great resources to understand mixed effect models:

 

http://www.planta.cn/forum/files_planta/lmertutorial_941.pdf

https://github.com/vasishth/Statistics-lecture-notes-Potsdam/tree/master/IntroductoryStatistics

http://www.hsph.harvard.edu/fitzmaur/ala2e/

I have seen the github of https://github.com/vasishth , and it is really great with lots of interesting resources on statistics, bayesian stuff, and linear and mixed models.