Using your finderscope, scout around to find the angle from one side to the other. Try Orion's belt or stars in the Big Dipper, for example, or you may already know the diameter of its field of view. Construct a circle of wire or on plastic to match the same view on your chart. Now, wandering over your star chart, you know what to expect to see in your finderscope. You can do the same with the widest-angle eyepiece for your telescope.
Observers use different plans of attack.
Searches for complete sets of objects are common. Another approach is to pick a specific area, a constellation or a square on one of your charts, and try to find all of the objects therein. None of this even begins to cover observing guides, handbooks, catalogues or almanacs, not to mention atlases of the Moon. There's an incredible wealth of observing information available.