Well, I sure know something about being a newbie and I run with my wife of 38 years so maybe I can help. (I can't beleive I'm actually helping someone).
Anyway, we broke into expediting 8 months ago with a friend's sprinter van and we absolutley LOVE IT! Now be aware that we are both retired with somewhat meager pensions so we don't absolutley depend on what we make at expediting, but the extra income sure does help! That's VERY, VERY important. But as far as the job itself, we can't wait for the next load so we can see something new everyday. We were lucky enough to hit it off the first time with a great carrier (ON-Dekk Transportation). The lifestyle poses no real problems for us becasue we both retired from transportation so we both kinda' knew what we were doing. I was in your shoes about 8 months ago and I can't tell ya how much the great people on this forum (no smoke or mirrors) have helped us! Just ask and they will bend over backwards to help you. The 2 most important things I learned are 1). DO NOT go head over heels in debt UNTIL you know for sure you are going to like it! and 2). Start driving for a owner or fleet owner before you go into debt. THESE are the two most important things to consider..(IMHO)!
Don't hesitate to ask ANY questions...you can't find any more help anywhere than this forum.
Hope this helps a little..
Jumbuck