I copied this from a very ancient thread, so the information may not be completely accurate. The amount of weeks that it takes to train each skills also depends on how old your players are and also the height of your player for some skills. The younger your players are, the faster they will train. Taller players will train big man skills faster, but guard skills slower and vice versa for smaller players.
Pressure
PG:
Trains OD @ 2 weeks
Trains ID @ 8+
Trains HN @ 8+
Trains DV @ 8+
Shotblocking
C:
Trains SB @ 1-2 weeks
Trains ID @ 3-4 weeks?
Trains RB @ 3-4 weeks?
Inside Defense
C:
Trains ID @ 1-2 weeks
Trains DV @ 3-4 weeks?
Trains IS @ 3-4 weeks?
Trains SB @ 3-4 weeks?
Inside Scoring
C:
Trains IS @ 1-2 weeks
Trains ID @ 3-4 weeks?
Trains JS @ ?
One on One
Guards:
Trains DV @ 2-3 weeks
Trains HN @ 3-4 weeks
Trains JS @ 3-4 weeks
Forwards:
Trains DV @ 1.8 weeks
Trains HN @ 2.3 weeks
Trains IS @ 4-5 weeks
Trains JS @ 4-5 weeks
Outside Shooting
SG:
Trains JR @ 2-3 weeks
Trains JS @ 4-6 weeks
Trains DV @ 7-8 weeks
Trains HN @ 7-8 weeks
Jump Shot
Guards:
Trains JS @ 2-3 weeks
Trains JR @ 7-8 weeks
Trains HN @ 7-8 weeks
Trains DV @ 7-8 weeks
Forwards:
Trains JS @ 2-3 weeks
Trains JR @ 7-8 weeks
Trains IS @ 7-8 weeks
Wingmen:
Trains JS @ 2-3 weeks
Trains JR @ 7-8 weeks
Trains DV @ 7-8 weeks
Trains HN @ 7-8 weeks
Trians IS @ 7-8 weeks
Ball Handling
PG:
Trains HN @ 1-2 weeks
Trains PS 2-3 weeks?
Passing
PG:
Trains PS @ 1-2 weeks
Trains HN @ 2-3 weeks?