There are tutorials on the site and which come with the program. Have you investigated all of those?
Check out this new BIAB Wiki
. There may not be any videos there yet, but there will be. The page is intended as a central repository for all useful information on using the program.
In the meantime, go to youtube to see what's available. There are some videos done by PG Music, others made by users.
If you're new, those should keep you busy for a while. *g*