New to the GIMP/digi scrapping

[mwilson569]

I have several questions I need help with!

I cannot figure out or find a tutorial on cropping my pictures in shapes other than squares and rectangles. I would like to know how to get my background papers as well as photos in circles and ovals. Also, I am brand new to digital scrapbooking and I am interested in saving my pages to a disc that can be viewed on a TV in a slideshow format. Is this possible and if so, can anyone point me to a website that can teach me how to do this? Thank you!!!