Well I was wondering if I can use this like an external desktop (so like how windows is user friendly and everything) accessible from anywhere, for whatever reason I can think of. If so how might I go about doing that?
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It sounds like you are talking about setting up a remote desktop. While we do not provide a pre-built image for this you can configure your droplet to provide a remote desktop via vnc. The following tutorial will walk you through this process.
How to Install and Configure VNC on Ubuntu 14.04