Originally Posted by mistarose
It is also an excellent learning experience, and many believe that everyone should teach others to fly at some point in their flying career.
As far as doing the CFI and CFII at the same time, not really, I guess you could, but you must become a CFI before becoming a CFII of course..
You are GUARANTEED to have to teach during your flying career. Any airline captain flying with a new FO (or new to that airplane) is teaching. Actually the reverse can be true when an experienced jet FO flys with a captain who just upgraded from a turboprop...BTDT!
You can get a CFII without a CFI. That would allow you to do instruction towards an instrument rating or IPC, but not towards private, commercial, etc. There are a few such folks out there. Normally you get the CFI first.