When (and how) to let guests know about Wedding Website

I have created a really lovely wedding website that allows me to invite guests and track RSVPS and includes all the info for my wedding. I'm sending my save the dates in a month and I'm just wondering when I should let my guests know about the website? I've had trouble finding the answer to this. Do I wait until after I send the STD's and then email everyone to let them know about the website, or on Facebook? Do I wait until the actual invites go out and then let people know to go to the website? It seems redundant to send save the dates then invite people via the website then invite them again with a paper invite. Should I just not invite people on the website at all? What's the best way to approach all of this? I appreciate any help with this! It's super confusing.