The Guides submenu contains various commands for the creation and removal of guides.
You can access this submenu from the main menu through Image → Guides.
The Guides submenu contains the following commands:
Secção 6.29, “New Guide (by Percent)”
Secção 6.30, “New Guide”
Secção 6.31, “New Guides from Selection”
Secção 6.32, “Remove all Guides”