I try to take and delete pictures but it keeps saying,"check card protect switch and I don't know where it is.

If it's actually saying "write protect" then look at your memory card. SD and SDHC cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Eject memory card and flip the white switch. If that doesn't fix problem some cameras can add accidental deletion protection which first needs to be disabled

What size is the memory card. If it's larger than 4GB then it won't work in the 5118.
Try using another card. Don't format it in your computer but do format it in the camera before trying to take pictures.

Could be bad card. I've had it happen many times. Sometimes a photo recovery program can get images off card for you.

Look at your memory card. SD and SDHC cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.
If this doesn't do it, try a different card.

Take the memory card out of your camera and look at it. SD and SDHC cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card. If that doesn't do it, try another card.

Take the memory card out of the camera and look at it. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card. If the switch is already in the proper position, slide it fully the other way and then back again.

There are several possible causes for "memory card locked/protected", "memory card error", or "no memory card". Some include trying to use of a 4GB SDHC card with an older camera made before SDHC format came out. Others include problems with the tiny slide switch on the side of the card, or the electrical contact switch internal to the camera. The problem may also arise from simple formatting problems if the card has never been formatted in the camera (note that this will also erase the card). Troubleshooting tips for this problem may be found at this link.

SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card. If the switch is already in the proper position, slide it fully the other way and then back again.