I'd start by learning how to search - <a href="https://news.ycombinator.com/item?id=9419877" rel="nofollow">https://news.ycombinator.com/item?id=9419877</a>.
Sysadmins have to learn about more abortive technologies and know about them sooner than most programmers. They have to have knowledge of stuff that should have been deprecated a long time ago and they have to know why to say yes, no, or maybe when they're asked to do something new.<p>Reading, assessing, and learning are massively important skills.