I have Posted on my Blog Quick reference for the Linux+ exam. As I go
through the book I will post what I think needs to be done in order to
"Use the source !" The first post covers commands and the second covers
RPM and Yum Package management. IF you want to take a Look go to
http://www.ron-l-j.com/blog I hope this help any new users looking to get
up to speed.
Also for text editing I recommend typing in vim tutor at the command prompt.

    "Train yourself to let go of everything you fear to lose."
    ―Yoda to Anakin Skywalker

,Ron