Play 4-card majors, with just Stayman and Blackwood as conventions, and jumps stronger than non-jumps. Any old books by Goren you can find at a used book store will serve as texts. When your players get a little better, show them Five Weeks to Winning Bridge by Sheinwold. Then let them loose.

Alternatively, Edgar Kaplan's Bridge for Dummies is a good modern introduction to the game by one of the best bridge writers of the 20th century.

Play 4-card majors, with just Stayman and Blackwood as conventions, and jumps stronger than non-jumps. Any old books by Goren you can find at a used book store will serve as texts. When your players get a little better, show them Five Weeks to Winning Bridge by Sheinwold. Then let them loose.

Alternatively, Edgar Kaplan's Bridge for Dummies is a good modern introduction to the game by one of the best bridge writers of the 20th century.

Update:
Given your time constraint, and the desire to introduce Bridge (which I applaud), why not try Auction Bridge instead of Contract? There is still a dummy to allow the increased precision of declarer and defending card play which that allows, and the selection of trump by the partnerships, but the points are simply for how many tricks are taken, not o whether that number of tricks was contracted for.