If I have a CMS that I want lets say... cycle through a number of quotes... is there a way I can have 3 fields laid out to start, then give the user the ability to add field 4,5,6,7,8,9,... while they're in it?

You probably want to look at using a TableField of some sort - http://doc.silverstripe.com/doku.php?id=tablelistfield

You can make a DataObject of a 'Quote' then a table field of quotes. This will give you the ability to add / remove quotes

Sorry I cant expand anymore on that, running between things at the moment. Have a look at the tutorial tho. http://doc.silverstripe.com/doku.php?id=tutorial:5-dataobject-relationship-management . Ill post an example when I have a sec!

Hey Matt,

I have written up a quick tutorial for you on the wiki - http://doc.silverstripe.com/doku.php?id=recipes:example_of_quotes_on_a_page . The code you need to get it to work is pretty small as you can see I just tried to expand it a bit. Let me know if you have any questions

I will also attach my code to the page for you.