Computers are really a mystery to me.

I play on a computer everyday. I have his blog and have many blogs that I read daily. I am addicted to my favorite mommy message board. But, when it comes to anything technical on this thing I am completely clueless. I am trying to figure out the whole uploading of music on my new MP3 player. I still have problems transferring pictures from the camera to the computer. I did figure it out on one of our cameras, but the other one is still a mystery to me. LOL Having said all that I have a question. I would like to find a new bigger (as in holds more pictures) memory card for our digital cameras. Will the micro sd work for that or do I need to look somewhere else?