There are main areas to concentrate on when starting out with Linux. Learn these to jump start your path towards becoming an entry level or junior system administrator. At first, don't waste your time going through a certification book and learning every command. There's one thing you need which applies to almost eveything in life.

I have 9 years experience being an AIX sys admin and 11 years experience being a Linux sys admin. I started out (unknowingly) with what I talk about in the video. So it does work!