danielle,
hi & welcome! there’s a whole ‘Sandifer’s section if you were, linked to from the ‘Introduce Yourself Forum’
If you go there, to the ‘Introduce yourself Forum’, at the top of the list of posts of introductions, You’ll see a ‘stickied’ post called ‘groupie Intro’ – click there and you’ll find a bit more sandifer information
so glad you found us!
~laura