rainmaker is correct, except that she left out the word
NOT in her post while answering part 1.
Here is the rule citation:
RULE 9
SECTION 9 BACKCOURT
ART. 1 . . . A player shall not be the first to touch a ball after it has been in team control in the frontcourt, if he/she or a teammate last touched or was touched by the ball in the frontcourt before it went to the backcourt.
ART. 2 . . . While in team control in its backcourt, a player shall not cause the ball to go from backcourt to frontcourt and return to backcourt, without the ball touching a player in the frontcourt, and be the first to touch it in the backcourt.
ART. 3 . . . A player from the team not in control (defensive player or during a jump ball or throw-in) may legally jump from his/her frontcourt, secure control of the ball with both feet off the floor and return to the floor with one or both feet in the backcourt. The player may make a normal landing and it makes no difference whether the first foot down is in the frontcourt or backcourt.
PENALTY: (Section 9) The ball is dead when the violation occurs and is awarded to the opponents for a throw-in from the designated out-of-bounds spot nearest the violation.