I'd like to purchase some preferred stocks (or at least look into it), but I am not really sure how I could go about doing this.
I currently use Scottrade for most of my investing.
Preferred stock is traded on the market, so you can just buy it like any other. The symbol for a preferred stock is the ticker symbol followed by a dash and a letter for each class of preferred stock.
Generally speaking, you should buy Preferred stock with the intention of holding onto it for at least a couple of years. Often preferred shares are lightly traded and have wide spreads that made it difficult to make money in the short term.