More Computer Memory

I really enjoy my computer and all the options it offers, but I have noticed that some more computer memory would be nice. I do so much designing and editing with photos that extra storage would definitely much appreciated. Currently I am looking into my options to see what I can find. So far I haven't found much, but know that if I stay patient I will come across something! That's why I love the internet...there's a wealth of information just waiting to be found!