How do i delete photo albums from my ipod touch?

See the section titled "To delete photos from your device" in iPhone, iPad and iPod touch: Syncing photos via iTunes, http://support.apple.com/kb/HT4236

If the photos were synced to the iPod you have to unsync them

If they were taken by or saved to the iPod then select them

If you created the album then:

Delete an album Tap Edit, then tap .(minus sign in a red circle)

I cannot delete photo albums from my ipod touch. I am new to the ipod but when I go to my I-tune devices my only options are Sync...Transfer purchases.......backup or restore from backup. Other ways I have tried actually delete them off my computer. Can you help

Mine does not have the red minus sign. Is there another way?

As said before,

- If the photos were synced to the iPod you have to connect the iPod your your computer and unsync them

- If the photos were taken by or saved to the iPod (those in the Camera Roll or Saved photos album (depends upon the model iPod)), just select the photos and tap the trash can icon.

How can I unsync them?