Hook Shot: one-handed shot in an arc above the players head whilst they are standing perpendicular to the basket. The other arm is used to create space between the attacker and the defender. Very difficult to defend from in front, but susceptible to being stolen from behind.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.