There are many different stitches you can use when hand sewing an item. This page contains video tutorials for several options that can be used for different projects.
Invisible, good for closing a hole so the rough edges of your fabric won't show. Pick a thread that is close to the color of your fabric so it blends in.
Visible, fast, and easy. If you want your stitch to blend in, pick a thread color that is close to the color of your fabric.