I hope you were lucky enough to get a new
binocular for the holidays. The good news is that a binocular requires only a little in the way of maintenance. You don't have to be a rocket scientist to keep a binocular in good working order. In the field, always, always, always use the strap and nearly every binocular made comes with a binocular strap. The number one reason binoculars are damaged is from being dropped or banged against a hard object by people not using a binocular strap. When you are done with a
binocular, put in its case and take it with you. Leaving a binocular in a car where temperatures fluctuate greatly is very hard on binocular seals which in turn leads to leaking and fogging of the optics, even for a waterproof binocular.