You don’t need a studio or expensive equipment to produce your own FOANed content. Everyone has access to PowerPoint. Make your slides, concert them to PDF and in my case I send them to my iPad to an app call DoodleCast. You then play then as a slideshow and record your audio over it. Then bingo, you have your own content. You can save it to YouTune and link to it as needed, or to your local drive.
Give it a try!