When placing bread in a toaster, the direction you insert it will depend on the type of toaster you have:
Pop-up toaster: For most standard pop-up toasters, you'll typically place the bread slices vertically into the slots. The slots are designed to accommodate standard-sized slices of bread. Make sure the bread is centered within the slots, so it toasts evenly on both sides.
Toaster oven: If you're using a toaster oven, you can lay the bread slices directly on the toaster oven rack or use the toaster oven's tray. Again, ensure the bread is positioned so that it receives even toasting.
In both cases, make sure the toaster or toaster oven is unplugged before inserting the bread to avoid any risk of electrical shock or injury. Once the bread is in place, plug the toaster back in, set the desired toasting level, and wait for the toast to pop up or the toaster oven's timer to signal that it's ready. Remember to always use oven mitts or a heat-resistant tool to handle the toasted bread, as it will be hot.