Format in camera and use the card.
Every time you get back from being out and about use a card reader or camera usb to transfer the images to your PC just move the folder over.
Then Format the card to use again.
In the PC you can then save your pics into different folders named as you wish. Save them in PICTURES.
For viewing I reccommend the free program Faststone Viewer I am a pro photographer and use it in preference to anything on Windows! You have a lot of controls to improve the image, Colour, contrast, exposure cropping and loads more.
Also file renaming and renumbering plus resizing if you need to send a smaller image somewhere. It is comprehensive and brillant and FREE!
Also Free is Picassa which does similar but Picassa will also find all your images to allow you to find them easier. It will not move them on the PVC or copy them, but provides an easy link to them.
Personally I like to file my own photos and use Faststone.
Good luck