Does anyone know how to merge wav (sound files)? I would like to do this with the wav files I have been making using text-to-voice. The goal is to eventually make a youtube video. This will be my first one and so I need to learn how to do everything.

If you're on Windows, you can try M$'s (very basic) sound recorder. It allows you to merge multiple wave files. Click start, run, then type sndrec32.exe. Insert your wave files one at a time, then save.

Any video editing software should also have this capability (Windows Movie Maker, Premier, etc)