Thank you for quick response. Everything is clear now. There's just one more question. If player (or NPC) pays Fate Point to compel or invoke for effect just created Aspect can he (or anybody else really) get free +2/reroll afterwards or this tag is used already and no more free invokes?
No, the "free tag" shouldn't expire if you have used a Fate Point to Compel that Aspect. I'd say that they (the original creator or assessor of the Aspect, as well as any allied companions) can get that free tag in the same scene, but it may be moot - once you've Compelled someone like that, its usually to end their part in the conflict. If you can justify something later (not much later, usually, depending on whether it was a Consequence, a Maneuver, or an Assessed or Declared Aspect) you can probably go with it. For instance, I can see someone Compelling an NPC to stop running because of their Broken Leg (Fate Point), and later, when interrogating him, free-tagging that same Broken Leg for a +2 to an Intimidation check (or, conversely, free-tagging it for a +2 to a Rapport check "We'd like to bind your leg, but you have to help us").