Welcome, Stephanie,
I think you can start out quite well wth a 1" belt sander and a palm sander to
begin your journey into intarsia. After you determine how much contouring you want
to do, you may wish to add more tools.
Here is a link to some free patterns by Judy Gale Roberts
http://intarsia.com/shop/product-category/patterns/free/
Some stained glass patterns work fine for intarsia also.
Have fun and glad to have you here.
God Bless! Spirithorse