How To Save Px From Camera Into Win 8

i was able to get as far as having the px load from camera to computer & somehow all px got installed into the computer but only temporarily ! While camera was still attached to tower, I clicked on Control Panel/Computer/then the list of programs in computer and then i saw the name of the camera (cannon Power Shot) ...then Cannon 100, clicked on that and then saw all px - was able to individually email some to myself but when i detached cable from tower to camera and went back to ''Computer'' found Cannon 100 but no px were there -so obviously i wasn't able to save them.....but strangely enough 3 of the downloaded px were in the ''DCIM' folder (whatever that term means)...but i don't know how those 3 got there ! So i got far enough to download & 'view' but don't know how to ''save'' the px in the computer for future viewing without the necessity of attaching the camera....besides i'd like to delete some px from the camera once saved into the computer.....I'm so used to XP