Special abilities and training speed

[mmmerz]

Hey i'm a level 2 manager, I was wondering are special abilities worth the 50 skill points or is it better to spend them on skills?

And i once read that Defensive wall is better for DL DR and Aerial defender is better for DC is that correct? =)

And what determines the training progress speed of a player? the number of stars + age ( less stars and age is better ) i would guess am I correct? And is the market value a kind of a reflection of how fast the player trains? like an age 18, 15 quality player that worths 1.5M should be a fast trainer.

I know so many questions =P hopefully i'll be able to help u too somehow.