1) Create a folder on your desktop containing all the pictures you wish to store on your iPod.
2) Then plug it into the computer and open iTunes.
3) On the menu on the left hand side, open your iPod's internal storage.
4) Then, in the list across the top of the screen, click 'photos'.
5) Then tick the box labelled 'Sync photos from:'
6) Then on the drop-down menu next to it, select thr folder containing your pictures.
7) From the two options underneath, be sure the check that 'All photos' is selected.
8) Then click 'sync' which is located at the bottom of the screen.
9) Then wait for it to sync. (iTunes will tell you when it's done.)
10) Unplug your iPod and check it. Your pictures should be uploaded successfully.
(If you want to add or take-away photos just do so in the folder on your desktop, and follow the steps again.)