Are there any helpful video channels that can be used for both applying and showing examples of how to do that application?
There are numerous video channels that can be used for that. An example would be some algebra videos from Professor Leonard https://www.youtube.com/watch?v=0EnklHkVKXI&list=PLC292123722B1B450&index=1. Another could be from The Organic Chemistry Tutor when studying the TEAS https://www.youtube.com/watch?v=CzOQqY7L0K4