The Truth About Spelling
This article presents some interesting ideas and suggestions to consider.
The Dolch Sight Word Website
This site has games and printables as well as the official lists in several formats.
Dolch Sight Words by Frequency and Grade Level
This is a great chart to decide how to break the words across grade levels and order of importance.
Another Dolch Sight Words Website
These are essential to reading, but I put them here as well because it is beneficial for students to learn their words in their writing too.