Hi, if you are not eager to learn some data mining tasks by reading, I recommend you watch this online video (can also be download-mp4) on practical data mining using Weka (open source data mining tool in java). The presenter shows you step by step on how to install weka, selecting real world data source, how to clean the data, how to upload the data into Weka, selecting learning algorithm and result (model) interpretation. The current available data mining videos are:
cluster and neural network
experimenter (weka module)
I bet you can learn the tasks faster more than you know (at least it works for me..).
Watch Online Data Mining Tutorial with Weka.
For More Information about Data Minining click here