Tableau can connect to a lot of different servers. They all have their specificities, but Tableau always keeps it simple. For example, if you want to connect to Google Drive, enter your Google account information and select the Google Sheet you want, as shown in the following screenshot:

Also, don't forget to use Tableau's help! A simple search on the internet for Tableau connects to this server, this server being any data provider, and you'll find Tableau's official step-by-step guide. 

Before the next section about Joins, let's do a quick focus on a special kind of file: the Spatial file.