Questions about Serato DJ Intro and Usb Sticks.

I don't have a controller yet and I am using Serato DJ intro on my laptop in the one deck mode since you need to plug in hardware to able to to use two decks. But I noticed that when I have a usb stick plugged into my computer that has songs on it there ins't anything on serato DJ intro that allows me to click on it and use the songs from it. Is this because I need hardware?

yes, u need the hardware to get both decks, otherwise u will get only 1 deck

If it's like scratch live and ITCH, press the 'files' button next to the search bar and you get a normal file browser pane that will let you access a USB drive.