I am new to WordPress - the fact that I've managed to get my website online is unbelievable, but now I need some help to customise it to my needs.
Using a template, I've created http://www.bestdiscountvouchers.co.uk, which lists the discount vouchers for all the major retailers. As you can see, what I've done is list the categories by retailer down the side.
I want to further customize it so that just like http://www.ukoffer.com, it has a second layer of category (by type of discount, ie. clothing, electronics, etc).
I can't for the life of me figure out how to set this up - any and all advice is much appreciated!