http://www.nikonchat.com/coolpix-l19-manual/
What memory card fits the Coolpix L20/L19?
the manual just says SD memory card, but how I can know the size and stuff? Please help ASAP
SD / SDHC is the physical size of the card. High quality @'ll get about 500 images by GB. 2GB cards are cheap (usually a few dollars more than one) and 1000 images should be enough for anyone.