The camra works fine until i put in the memory card,when i put in the card it pops up E53 and wont do anything-to get that off i have to take out the card and batteries and its fine again-what do i do?

Without knowing the camera make and model I can only suggest you check your owners manual on how to format your memory card, your manual may also call it initialize.
I'm also going to include a diagram that shows the SD sliding lock, if this lock is in the lock position a whole sea of problems can "pop" up. the lock function is there top protect pictures or files on the card from being deleted by mistake. However sometimes these annoying little trouble makers get pulled down into the lock position.
Here is the diagram. Remember check the lock and then format/initialize your memory card also after each time you download your images from the camera or the optional card reader you must format the memory card to have the camera properly function with the memory card.

Hope this helps have fun with your camera