If you plan to release or sell these songs or even plan to shop material, you also want to consider getting publishing stuff set up. It does entail creating your own publishing company (you'll note that songwriting stuff usually is phrased as 'Written by Joe Rocker for Rocker Docker Publishing Inc.'..that type of thing). If you have serious aspirations, a good move to set up an incorporated business. Not a big deal in the world with LegalZoom.com.
Second thing is to set up mechanical licensing. If your songs sells whether it's you that performs it or someone else, this is how you ensure you get paid. You would set that up most likely with the Harry Fox Agency ( http://www.harryfox.com ). While fees are part of the deal, this is how you don't get screwed in the business. It's been said that songwriting is where the money is at and this is pretty much true and have something like HFA to ensure you get paid is a good thing.
So, just a little extra something to add.
