Advice and ideas on helping nursing students

Hi everyone!

I am working on making some youtube videos to help nursing students; but, I don't know what topic/subject to cover first...
When I was still in school, I would take all of our lectures, re-enter them and add pictures, tips, sayings to help us remember things, etc. and posted them for all of us. Everyone said that they really helped them. So...I was wanting to put this into video form to help others. Does anyone have any ideas?

Thanks for all of your help!!!