1984 by George Orwell. Essential reading for everyone.
Conscience of a Conservative by Brent Bozell written for Barry Goldwater.
When Character was King by Peggy Noonan. Good book about Ronald Reagan.
Parliment of Whores by PJ O’Rourke
It is meant to be a warning, not an instructional manual, as the left seems to view it.
In arguments with the left, it is interesting they would view events in Orwell's 1984 as something that might happen under a conservative government, when in fact those things have actually occurred under liberal governments.