I Need More Memory

My laptop has been giving me so many problems lately. It has been slow, freezing up, or just refusing to do things. I take a lot of pictures and videos and I've used up most of my memory. I need to buy memory for it really soon. I have been dumping things onto cd's and dvd's for the last week, but it doesn't seem to be helping much. Tonight, it shut down on me twice! It is definitely time for me to upgrade and buy several more GB's of memory.