I know someone who started off training only 4 players, two were 6th men one a starter and one a p-all-star. Guess how 3 of those 4 are going now 3 seasons later?
I did completly stupid things when I was starting, had no idea what I was doing, but we want the new players to enjoy the game and achieve some success. Training and "bonding" with a player is one of the ways to make this game very addictive, like a role playing game in a way as people love to see their characters level up.