How to access hidden folders?

macOS

1. Open Finder
2. Click "Go" on the menu bar

3. Press and hold the "option/alt" key

4. Then the "Library" appears 

MS WINDOWS

1. Open File Explorer from the taskbar. 

2.Select View > Options > Change folder and search options.

3. Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.