You may be surprised to know that the Didache, or the writings of the Twelve Apostles, was one of the first Christian tracts. It explains the two ways that we can live our lives. The wikipedea has some good resources for your investigation.
Conciliar Press also has a wonderful Tract Rack with many tract booklets.
Fr. Alexander has many rich resources on the internet. Although not formatted in a handout format, they are rich with information on the Orthodox Church.