Melissa,
Cleaning the machine is pretty straight forward. You need to get the build up of gunk off the machine.
To do this you can start with sewing machine oil and see how much that cleans off. After that I use either / and Hoppe's #9 gun cleaning solvent and denatured alcohol. Lots of q-tips, cotton balls, small tooth brushes and time. Set aside lots of time.
Don't get in any hurry and don't use any harsh chemicals on the paint. What's left of the decals will be ruined.
For parts here are several on line sources:
{
http://www.thequiltgal.com/index.htm } I believe the quilt gal is a member here.
{
http://www.shop.sew-classic.com/ }
{
http://pages.suddenlink.net/joyof301s/glenn.htm }
{
http://sewingmachine221sale.bizland....re/page18.html }
{
http://www.april1930s.com/index.html }
I'm sure there are more, but these came up in my bookmarks.
I would suggest Tri-Flow oil and grease for the machine after you get it cleaned out, and Singer Lube (in the tube) only for the motor. These can be had at Sew-Classic.
Joe