Where could I find a purse I online that's big has many pockets and is preferably black/green/purple?
You can find a purse that has many pocket and big in size at http://www.ebay.com/sch/Handbags-Purses-/63852/i.html. This website will provide you with a number of purses and you will be able to choose the one that suits your taste.
amazon or ebay i would guess
Try amazon and eBay.