As a young player, you should focus on becoming able to play within the evolving system and of course in the specific system advocated by your coaches. Whatever the system you play in, the more simple yet flexible the better. You need to be able to rebound, play in space (pass, dribble, and catch on the move), and make open shots.
The 'pace and space' system demands a lot from its players - defensive rebounding prowess, effective outlet passing (a defensive rebound is not complete without safe initial advancement), good decisions on the move, and a transition system.
Without effective defensive rebounding (ideally greater than 75 percent of shots), a team won't be able to launch transition. If you're allowing 30-40 percent offensive rebounding, then you'll simply be losing on the glass.
You won't get many full-length of the court 'Kevin Love' passes but at least keep "look ahead/pass ahead" in your mind. The OUTLET RECEIVER should have her back to the sideline with good VISION of the next play, potentially a pass ahead or aggressive advancement, preferably to the middle.
If the outlet goes to the middle, that simplifies the spacing/movement (above). WINGS should run wide. In the famous "Laker Break" of Showtime, wings were expected to have the outside foot at the sideline at midcourt. Run wide. Wings must become proficient perimeter shooters. "Poor shooters are always open," as defenders rotate to scorers. Wings need to have three plays in mind with the 'advantage' break - perimeter shot, touch pass, or upfake and drive for an intended layup.
The FIRST BIG runs to the BLOCK. Which block (ballside or opposite) depends on the coaching philosophy. Either way, this helps pin the low defender(s) which opens up the perimeter shot. I'm not a big fan of crossing the wings (above) as I think it takes more time and energy than the value it creates. That doesn't make it wrong.
On some occasions, the big can set a DRAG SCREEN to free the penetrator.
"Don't be a HOLDER." The longer you hold the ball (> 2 seconds), the greater the chance for closeouts, defensive rotation, and players getting back in defensive transition. Effective playmaking has always been informed by DECISION-MAKING and ACCURACY (passing/shooting).
No matter what your transition plan, you need continuation into an early offense when the defense halts transition, with either motion or continuity offenses, sets, and breakdown strategies for late in the shot clock or end-of-periods. That's another discussion.
