In Windows there is a setting in the userinterface to show or hide hidden files and folders, but on a Mac there is no easy way to do this.
Most people only need to access the hidden Library folder sometimes and this is easy : Open a Finder window and hold the Alt key when you press on Go in the Finder menu bar, you see Library in the list now.
When you double click on Library it opens the folder in Finder. You can use the shortcut CMD+Shift+T now to add the Library folder to your Favorites bar in Finder so it is easy to find it the next time you need it.
Tip: If you want to view hidden files and folders in a Open or Save dialog in Office you can use this shortcut when the dialog is open to toggle the view Command+Shift+Dot
Note: This is not working in a Finder window.
For other ways there is information on the web how to use Terminal and there are also third party programs that you can use. Google it and you find a lot of information.