I\'ve heard about the Apriori algorithm several times before but never got the time or the opportunity to dig into it, can anyone explain to me in a simple way the workings
The best introduction to Apriori can be downloaded from this book:
http://www-users.cs.umn.edu/~kumar/dmbook/index.php
you can download the chapter 6 for free which explain Apriori very clearly.
Moreover, if you want to download a Java version of Apriori and other algorithms for frequent itemset mining, you can check my website:
http://www.philippe-fournier-viger.com/spmf/