I think you are in the correct area.
You have 2 computers or is this about a single computer?
Deleting Calibre, Does Not Delete
the Library previously created on that computer.
Reloading Calibre will not fix user errors (or over sights
) to an existing Library. Those kind of errors can almost always be fixed with the Metadata editor and the Bulk-Metadata editor.
You can change the Location of where you placed your library, with the little arrow next to the Library icon (on the tool bar)