You're welcome, hope that helped you.
I'm the wrong person to ask about which video to watch first. I've used the program for about 20 years and that's long before there were any videos. I do look at the new ones that describe specific new features, so I know they are well done. Someone who recently purchased the program would be able to give you a good answer.
In the meantime, just flip a coin and watch one. You'll quickly see what's basically going on. And there is no substitute for diving right in and experimenting. Have fun!
BIAB 2016 for Windows Audiophile, SONAR Platinum, Adobe Audition, Ozone, & Encore all running on Windows 10 64-bit. Hardware includes a Roland Integra-7, Focusrite 18i20, TCE Finalizer, Behringer X-Touch.