While neither Nystul nor uberfish are completely wrong I feel their recommendation lacks accuracy.
First of all, building a pawn center even with c4 and f4 may be completely viable, such as in the 4 pawn attack of the King's Indian:
http://en.wikipedia.org/wiki/King%27s_In...wns_Attack
The most important thing is to identify the positional imbalances. You have a large center and it comes with a space advantage. What is your plan? To make your center indestructible. What should be your opponent's plan? To dismantle your center. If you succeed, you may be able to win with a kingside attack due to higher mobility or squeeze your opponent in an endgame.
If you don't know how to carry out such a plan, consider getting:
http://www.amazon.com/How-Reassess-Your-...1890085138
There is a large section on a) how to maintain a center and b) how to attack it.
Also, some seemingly "passive" defenses such as the hedgehog are not to be underestimated:
http://www.youtube.com/watch?v=Mq3AjxyvM-8
First of all, building a pawn center even with c4 and f4 may be completely viable, such as in the 4 pawn attack of the King's Indian:
http://en.wikipedia.org/wiki/King%27s_In...wns_Attack
The most important thing is to identify the positional imbalances. You have a large center and it comes with a space advantage. What is your plan? To make your center indestructible. What should be your opponent's plan? To dismantle your center. If you succeed, you may be able to win with a kingside attack due to higher mobility or squeeze your opponent in an endgame.
If you don't know how to carry out such a plan, consider getting:
http://www.amazon.com/How-Reassess-Your-...1890085138
There is a large section on a) how to maintain a center and b) how to attack it.
Also, some seemingly "passive" defenses such as the hedgehog are not to be underestimated:
http://www.youtube.com/watch?v=Mq3AjxyvM-8