Training - one of the most important thing in hattrick

How long you will train him?
Goolkeeper - 5 weeks \ with 9 goolkeeping coaches
Defending - 8 weeks \ trains wingbacks and central defs at the same amount
Defensive positions - 16 weeks \ trains inner-mids, wingers and defenders at 50% of normal def.
Playmaking for inner-midfielders - 7 weeks \ inner-mids get 100% of playmaking training
Playmaking for wingers -14weeks \ wingers get 50% of playmaking training
Scoring - 6/7 weeks \ trains forwards only
Winger - 5 weeks \ trains wingbacks 50% and wingers 100%
Wing Attacks - 7-8 weeks \ trains wingers and forwards
Short Passes - 6 weeks \ trains inner-mids, wingers and forwards
Through Passes - 6 weeks \ trains inner-mids, wingers and defenders
Shooting for scoring skill - 14 weeks \ trains all outfielders that actually played that week
Shooting for set-pieces skill - 14 weeks \ trains all players
Set-Pieces - 2 weeks \ trains all outfielders 25% bonus to the set pieces taker and goalkeeper
General in matters of form -1 week \ trains all that played that week including goaltenders
General in matters of goaltending - 1 week \ trains goaltenders a bit

Which position can be trained in what skills?
Goalkeeper - keeping
Central Defenders - defending, defensive positions, through passes
Wingbacks - defending, winger, defensive positions, through passes
Wingers - winger, wing attack, playmaking, short passes, defensive positions, through passes
Inner Midfielders - playmaking, short passes, defensive positions, throughpasses
Forwards - scoring, wing attack, short passes
All that played - shooting (scoring), general, set-pieces, stamina
All - stamina

Training affect on formation
Keeping - all tactics (2 players)
Defending - 5-4-1 or 5-3-2 (10 players)
Defensive positions - 5-4-1 (18 at 50%)
Playmaking - 3-5-2 or 4-5-1 (10 players , 4 at 50%)
Passing - 3-5-2 (14 players)
Through Passes - 4-5-1 or 5-4-1 (18 players)
Winger - all tactics (8 players , 4 at 50%)
Wing Attack - (10 players)
Scoring - (6 players)