I'm looking for some general advice here. I've decided to take my first job in a *lead* sys admin position...I don't start until next month, but in the meantime I'd like to prepare for the position.

For those of you that have walked into this role at some point in your career, what were your primary objectives on Day 1?

The end users for the company use a mixture of 4-5 different distros of Linux in addition to both Windows and Mac. This is obviously a cumbersome environment to support so I'll likely see if I can limit the users to a single distro of Linux, in addition to Windows which will have setups controlled by AD, and all Macs configured on a single version.

Ensuring they have a good backup solution in place is where I think I'm most likely to concentrate my efforts immediately. After that though, I'm not sure what the most important objectives should be. What do you guys think?

Any help would be greatly appreciated!