Currently, I host my client's application services using a Windows VPS. With this setup, administration boils down to logging in through an RDP client. I am interested in eventually transitioning all services to Linux, so as step one in this process, I've rented a Linux VPS (Ubuntu 11.04 via nqhost) to play around with.
As you can probably tell, I am not a Linux expert, but I use Ubuntu daily on my home PC as well as at work (developing with LAMP), so I have a decent grasp of the fundamentals, at least when the machine is physically in front of me.
For someone who is used to RDP, what kind of resources should I look into for managing my Linux VPS?