All of these documents are yours to download and use, completely free of charge.
All I ask is that you do not sell these documents on or pass them off as your own.
If you aren’t familiar with Google Sheets etc each link will take you to the document in my Google Drive. You then need to go to File -> Make a copy. This will place a file for you to use in your Google Drive.
Have a look at the articles I have written to see how these various templates are used and fit together