It is very easy to use for me personally, I have taught students how this software works but they do not know anything about it themselves so its good that there are tutorials out their as well! The interface could be better organized or at least more intuitive (there shouldnt really need 3 clicks of something just in order to get what you want). We used bayesian methods with R/SAS data sets using MCMC sampling techniques such ass Gibbs sampler etc., we also had some non-bayessian models like logistic regression when required.