I need to do some data mining on oracle data base

how would you suggest the most easy and efficient way to do this

db has some info such as hotel check in and check out records

i wanna do some analyzes such as what month has most check in / check out

avg price spent, length of stay, avg percentage occupied per month / year


what is the best way to data mine oracle db
i've been reading for a couple of day and found ODM

are there any good guides or walkthrough since i am fairly new at this