Here is the link to a Foot Size Chart:
Here are instructions to make a pair of slippers:
The Pink Slipper Project website has patterns for Knit and Crochet Slippers on its right sidebar.
Knit Slippers
Bev’s Knitted Slipper Squares-See Bottom of page for crocheted squares with measurements
Children’s Slippers Knitting Pattern
Cuffed Slippers Knitting Pattern
Easy Slippers for Children, Men and Women
Grandma’s Knitted Slippers-FaveCrafts
Grandma’s Knitted Slippers-link to PDF pattern on Rt. Sidebar
Knitted Slippers for Everyone-Bev’s site
Little Stay On Slippers-Uses my all time favorite yarn!
Very Easy Knitted Slippers-Last pattern at bottom of the page
Crochet Slippers
Child’s Incredible Winter Slippers
Quick and Easy Crocheted Slippers
More Resources for Slippers