Reading

Simple Naive Bayes Example
Another clear Naive Bayes explanation with distribution math
Naive Bayes in Wikipedia
Maximum Likelihood
Why does naive Bayes work so well even though the assumption is very bad?
Paper on spam filtering and types of naive Bayes (Gaussian, Multinomial, etc)
More technical paper with math on naive Bayes
Bayesian Inference (Think Bayes is also very good at explaining this)