Molli:
Have you kept a tank of any kind before this one?
I highly recommend avoiding corals that are "good for beginners" and to first consider what corals you'd really like to keep. (You're not going to be a beginner for long....then who are those corals in the tank for??? :wink

Once you decide what you like, it's not to hard to make sure both you and your tank are set up for it.
Some thoughts:
Do you really like the varied shapes and colors of SPS coral such as Montipora and Acropora?
Do you like the flowing movements and wild color patterns of LPS corals such as Scolymia, Euphillia and the various "chalices"?
Leather corals have a whole other variety of (mostly) flowing shapes and colors - many more "earth tones".
Most soft corals like Cloves, Zoas, Briariums, Star Polypls, Mushrooms, etc. are recommended for beginners because they grow like weeds (i.e. quickly and everywhere you don't want them) and will survive many bad husbandry practices.
If your goal is to practice good husbandry of whatever animals you keep (of course it is!) then I see nothing in particular to recommend soft corals over any other variety you might find attractive.
There are many
easy SPS, LPS, Leather and soft corals, so don't start off being intimidated into "beginner corals". (Unless that's really what you like!)
I always recommend that beginners take as long as possible to look at coral pictures in books (very good to have a good coral book at home) and online as well as looking at as many live coral at your local fish store(s) as possible to decide what you like.
Rule #1 for beginners (and everyone else too) is to
GO SLOW.
If you want to start with SPS coral and feel unsure of yourself, start with one small frag and "live with it" for a few months.
Get a Salifert Alkalinity test kit and test you tank water regularly (weekly or so at first, always same time of day) to see what happens as the coral grows out into a full colony.
-Matt