There are two basic types of offensive plays in youth football -- running plays and passing plays. In general, players should work on both types. The plays you choose to run may depend a lot on the formations you use for your team.
You should have, in general, no more than around 12 formations, and sometimes you will need far fewer than that. Some basic formations include the "I," the "Wing-T" and the "Spread." An "I" formation, with the fullback and running back lined up directly behind the quarterback, can lead to successful running and passing plays. By using this formation, your quarterback can run, hand the ball to a halfback or fullback, or throw a pass.
In a "Wing-T" or a "Wishbone" formation, there are three backs and two tight ends. A "Spread" formation, on the other hand, has most of your offense spread at or near the line of scrimmage. All three of these formations create different types of opportunities for running and passing the ball.
You will probably want to concentrate on teaching your players one or two of these formations to begin with and then slowly build your plays based on these formations. It is a good idea to have a couple of passing plays and a couple of running plays ready to utilize before your first game. Keep it simple -- you can always add more plays later. If you need ideas, try asking more experienced coaches or checking online resources for specific plays.
A successful team is strong both offensively and defensively. Read on to learn about the importance of teaching defensive playing in youth football.