Here is a page on the Adobe site that features video tutorials that range from getting started, to adding effects to noise reduction.
Sure there are expensive pieces of software for making noise, but there are plenty of things you can find that’ll cost you nothing (or next to nothing). This is a link to John’s sound resource site.
How to export your mulitrack Adobe Audition file as a WAV (uncompressed) or MP3 (Compressed)
Here is an evolving “HOW TO” guide for using the sound editing tool Adobe Audition
Here’s a page from Adobe that features all kinds of videos from the basics to color correction to animating elements
Typography, Carl Dair’s type contrasts and a few videos.