I'm not sure what's going on with your skills problem.
Regarding the GUID: if it's the guid of an object (item, character, trigger, spline, ...), you can paste the complete guid in the search box of the world outliner. This will only show (local and global) objects in the current level. You can also include global objects from other levels by clicking on the orange "O" button on the right of the search box. You cannot search for local objects in other levels.
