simple git standard thing?

Need some help with git; I have a folder that is on nearly ANY of my workstations and I have SEVERAL and would like to keep it synced. The name of the REPO is Documents. In my online [login to view URL] there is Documents and want to ensure this is on EACH of my workstations. As a result the “same” Documents will always be synced? So here is the ‘ASK’ for this project, if I come to a new workstation, what are the steps that I must go through to as a “git clone” will because there is an existing “Documents folder”. Please share the steps to “git init” the remote folder “Documents” with my local “./Documents”? I will pay promptly and left nice feedback and 5 stars