'Minus one' means that you do not deal the bottom card but the second from the bottom - sort of a second but dealt from the bottom. This is an Allan Ackerman invention and uses a push off bottom technique.
Allan Ackerman invented this Put-In-Place (or PIP) bottom deal where the spectator is left with a very clean visual which seems to rule out a bottom deal.
The strike bottom deal is less versatile and needs a lot of practice to get right. It can be performed from an Erdnase grip or a standard mechanics grip.
The Movie Seond Deal is really more a flourish than a second deal. It is a one-handed second where you pull out the second card and place it on top with the thumb.
This is a variation of the classic push off second deal where the thumb works from the top edge of the package rather than the long side edge of the deck.
Allan teaches the basic push off second deal. Very similar push off techniques are also used for double lifts or to get a break beneath the top two cards.
The best way to practice your false deals is to do it in front of spectators. However, until you have mastered the deal you can't realy use it. Allan shows you how you can practice dealing while performing for the public.