Jenny:
Currently, there are no video instructions. There is a help file (View > Extensions > Vegasaur > Help), which describes all the features. I suggest you to read it.
You must be pretty experienced Vegas user, if you want to use Vegasaur. Some of its tools simply automate tasks that you can do manually. For example, it can create regions at all events on the timeline with a single click, or add “Ken Burns animation” to your slideshow etc. There are tools that you can not replicate manually – for example, Vegasaur can import tracking data from BCC and apply it to the Track Motion, or generate text subtitles from SRT file etc.
I also suggest you to read Vegas help. It contains a lot of useful information!
About Transcoder
The basic unit of work in Transcoder is the job. Job consists of one or several source files, their properties, a render template, and other parameters. Each row in the Transcoder window represents a single job. To create a new job, click the Add button.


Set Output properties and click OK button. Multiple jobs can be created in one operation. For each source project or media file and each render template, a new job will be created. If, for example, 3 source clips were selected and 3 different render templates were specified, 9 jobs would be created.