We don't organize by number of databases...we each have 10-15 servers to be responsible for. I too was an accidental SQL Server DBA at my first job. I was actually trained as an Oracle Programmer, but that had to change quickly. Eventually I moved on. But how I wish I could go back to that first job knowing what I know now. The things I struggled with setting up and figuring out how to do....could have done it so much easier.

-SQLBill