If you want to replace your battery operated quartz clock movement, you have to be able to remove your clock hands. It’s really not that hard. Get yourself a small pair of needle nosed pliers and small cup to hold little parts. If you need reading glasses, then get them now as you are going to need them. Always work in a well-lighted area.
Most clock repair starts with getting the clock hands off of the clock mechanism. Virtually all clocks have an hour hand (the short one) and a minute hand (the long one). Many clocks have a third hand, which would normally be a second hand.