It may depend on the time of the year, of course.
Very early on, one can simply place an 'unchewable' item under the deeps and they will have to expand onto the extra-deeps. Plenty of time to achieve a full box of 14 x 12 frames.
One can fit frame extenders to make the deeps into 14x 12s. (never done it, never tried, never seen it, and it seems a waste of money).
You can do as VM suggests, but the wild comb may be a nuisance (I have done it this way before). I would start them against a side wall, so only one division board required. minor detail.
Eleven frames are more expensive, but should return a good crop in the first season - depending on timing, of course. But you will need to sacrifice (eventually) a full box of frames. Bearing in mind, of course, that foundation is going to be changed every two or three years in the brood. It may be into it's second season by the time you see it and changing to all new at the beginning of 2013 has a cost (but could be 'shook swarmed' if you would want to do that sort of frame change). Decide whether you date frames and work some out of the brood area each year or change the lot as in a Bailey frame change (or the shook swarm). Choices, choices!
A five frame nuc can provide a good crop if nurtured in the correct way and in a good year, but needs a bit of luck, maybe, for a beginner and a little skill so as not to produce a lot of sugar syrup as crop!
I have done it both as VM says, and placing a box under the deeps.
This last year, I wanted a few extra 14 x 12s drawn and used a couple boxes as supers. Extraction was fun, and for other reasons, I did not finish up with as many frames as I expected, but it is a thought for anyone starting in a hurry and with OSR available at the right time (and a suitable extractor for 14 x 12 frames!). I doubt you will be able to take advantage of that method, as a beginner.
The final method may also be appropriate, depending on how your bees are delivered. If in a robust, useable nuc, or in a full box, you could simply stick it (the nuc) over, or a full box of deeps under a brood and allow the bees to transfer as comb is built, eventually screening the queen into the 14 x 12 and removing the deep (nuc or brood box) three weeks after putting in a queen excluder.
So, lots of choices. Might depend on circumstance and time.
RAB