Depends a lot on where you currently are in your knowledge about Systems administration and what kind of learning materials you prefer. For me, as someone who s

Depends a lot on where you currently are in your knowledge about Systems administration and what kind of learning materials you prefer. For me, as someone who started learning about it from the ground up (zero prior experience as a sysadmin", and learns best from books "UNIX and Linux System Administration Handbook" was the starting point back then.