They are all easy to use. Just plug one into the usb port on your computer and it treats it as another drive. You should be able to find one for around $20.00.
Or you could buy an internal card reader/writer if you don't want another accessory cluttering things up.
My desktop has an internal multi-card reader/writer but I bought this (link below) SanDisk Compact Flash reader/writer for my laptop which only came with an SD reader:
http://www.staples.com/webapp/wcs/st...&cmArea=SEARCH