what is the signal for an indirect free kick
Indirect free kick The referee indicates an indirect free kick by raising his arm above his head until the kick has been taken and ball has touched another player other than the kicker or has gone out of play.[2]
Offside (association football) There is no offside offence if a player receives the ball directly from a goal kick, a corner kick, or a throw-in. It is also not an offence if the ball was last deliberately played by an opponent (except for a deliberate save). In this context, according to the IFAB, "A ‘save’ is when a player stops, or attempts to stop, a ball which is going into or very close to the goal with any part of the body except the hands/arms (unless the goalkeeper within the penalty area)." [1]