First in

Putting chips in first by choice: everyone before you folded, and only the forced bets are in.

Example

Everyone folds to Ben, who raises first in from the button.

Also written: first-in.

open-raise Being the first player to raise preflop, after everyone before you has folded.
limp Just calling the big blind preflop instead of raising.

Quads is for adults, 18 and over. It teaches with play chips only: there is no real money, ever.