yes, re-read the rules is always good. however to the Bertv's defense, the training section also has the Scout selection right there together, and I would wager that many a manager has overlooked/not understood this button at first glance.
Scouting- scouts evaluate talent for the draft that is held at the end of the season (2 days after the series championship game). So read up on the DRAFT section of the rules to better understand what your scouts do.
as to the training, yes, if you played three games, and in each game a Pooint Guard and a Shooting Guard both get 48 minutes in a game, then you could train a total of 6 players a week. (Jump Shot trains either both guards, both forwards, or team)