GLM explained very clearly

In this answer to Quora there is a very clear and short explanation on what is about GLM (Generalized linear model):

Great answer:

http://stats.stackexchange.com/questions/48485/what-is-the-difference-between-logit-transformed-linear-regression-logistic-reg

A second answer:

http://stats.stackexchange.com/questions/20523/difference-between-logit-and-probit-models#30909