Quick start on analyzing server logs for patterns

Hi all!

I'm a software dev and I haven't studied machine learning before. I'm interested in analyzing patterns of my user's log files to profile them better.

I'd like to ask for your help on what is the best way to get started quickly. What are the books/tutorials/sites that I should read to get me started. I'd appreciate your help. Thanks a lot in advance! :)

P.S. Also I'd like to hear any advice or tips that you can share. Thanks again!