What does a system administrator need to know to maintain a small server in the office?

Question

System administration

At work, they offer additional income in the form of server maintenance. In fact, an office for 20 people, every other day employees have problems with Windows, I solve them without problems. In fact, there are 2 servers in the office, 1 server is on Windows Server 2008, the second server is on a linux system, the company uses 1C (databases are backed up). I want to understand for myself what courses you need to take in order to serve two servers without problems. Anyone with experience please share where to start. In addition to this, the education is a specialized secondary technician-programmer.

Answer 1

Methodical "self-courses".
0. You define the scope of your immediate responsibilities.
1. Make a list - what you need / would like to do, and which of these you do not know how to do.
2. Google recipes - 90% of the admin work is chewed in detail on the Internet.
3. You apply what you have gained in practice, you beat your head against a rake, you gain experience.
4. You return to point 1.
And there is no “heavenly briefing”, after which you will know everything and understand everything, and cannot be in any courses.
An IT specialist is not someone who has been taught. It is the one who has learned.

Answer 2

Here you do not have linear algebra, on which detailed books with a good brick thickness are written. Administration is a set of practices. That is, first look at what tasks the server data solves. Then see what you know about these tasks. Then you ask yourself the question - "if tomorrow the screw dies in the server, and of course there are no backups, can I reinstall everything so that it works no worse than before?"
If the answer is "Yes" - you can take it
If the answer is "No" - either bring yourself to the condition of the answer "Yes", or not take it :)