jhonave, I for one, agree with using the SC cord to start.
I use the SC-17 cord, available cheap from KEH. I noticed the SC-17 and SC-29 function identically on a D7000. The SC-17 is 1/3 or less cost from KEH.
The reason I recommend the SC cord is simple. There are many facets to learning off camera flash. Getting some shutter time with fewer variables makes the time to the first great pic much shorter.
I learned OCF with a D7000, SC-17 and a SB-600. If I had gone straight to CLS with that SB-600, I would have eliminated OCF as an interest, fast!! There is no intuitive way to learn CLS with the SB-600.
Now, I do use CLS, but, the SC-17 is always within reach. Many times the CLS system will not be right (close-up, weird angles of flash positioning, outdoors - bright sunlight, other reasons)
I now also have the SB-700, and hands that fit size 3X gloves.
Oh, yea, it is easier to put on the SC-17 cord with gloves than try to get a SB-700 into "Remote" mode! LOL
Since I have had the SC-17, I have never taken a pic with a flash unit mounted directly to the D7000, even bounce. It is easier to aim the entire flash than twiddle around rotating/angling the flash head.
Did I mention the elimination of annoying pre-flashes?