So I start out exclusively using a 7 speed until I master the technique?
I think two things are true here:
1. It's better work initially with much slower discs (which doesn't mean that the discs themselves are slower but rather that they don't have to be thrown as hard to fly right. Throw lots of putters (and buy a practice basket for actual putting).
2. Honest folk will often admit that they ignored this advice at first, bought some fast discs, then went back to slower discs when the faster stuff was flying all wonky.
Personally, I've only been playing since late May. I started with a few mids and putters (good), bought a practice basket (very good), and then started accumulating drivers (hella fun, but not so good).
I've been working pretty hard on my game, and now I'm going back to the beginning a bit. I'm still bagging some understable drivers, but it was pretty obvious to me that the mids and putters where more likely to land on the tighter fairways, whereas the drivers only made sense on holes where being 60 degrees off target wasn't too inconvenient.
You'll probably find out that the putter you like to putt with will also fly reasonably well. Get a few of them. You'll find a mid that gets you out of trouble once or twice a round. Go there. Take those discs to an open field and throw them a lot.
The slow stuff can be great fun. My 2 latest acquisitions are a 1-speed (Glitch) and a 5-speed (Tursas). Experienced players find the latter too understable but for older/slower arms it fills a need (plus I'm playing a tournament next week with 2 sequentially more overstable mids in the player pack, so I'll have a good spread).
I spent this afternoon working on the nose down thing these folks are telling you about. It makes a big difference.
May the odds be ever in your favor.