You don’t need to memorize where each and every system preference is located. Just go to the system preferences and “show all” if you are not already at that view. Then type something into the search box at the upper left. Preference icons will highlight that have an item that matches your search term. Suggestions will also appear below the search box. For instance, type “corners” to find the hot corners setting.
Related: Finding Menubar Items, Alphabetical System Preferences, Default Search Location, Customize System Preferences, Mac App Store By Document Extension.
