If your Spectacles feel a little loose at the fold, try tightening the screws. You’ll need a very fine slotted or flathead screwdriver (anywhere between 1.5mm - 2.0mm). You can find these in most glasses repair kits.
If you need to adjust the way your Spectacles fit, take them to a qualified optician. Be sure to tell them not to apply heat or excessive water anywhere near the front of the frame where the electronics live.
Use the included cleaning cloth if you need to clean your lenses. This should take care of day-to-day cleaning, polishing, and generally keeping your Spectacles looking new.