Ill start with your first question: Each faction offers a different combination of attributes: Future War Cult offers Intellect and Discipline. New Monarchy offers Intellect and Strength. Dead Orbit offers strength and Discipline. Vanguard and Crucible Handlers offer a mix of all 3. Each of these attributes decrease the cooldown for a certain ability: Intellect reduces super cooldown. Strength reduces special meelee cooldown. Discipline reduces grenade cooldown. The armor is exactly the same in every other way for the factions apart from these attributes. Just choose which playstyle you prefer! To ear Crucible coins (Marks) all you need to do is play crucible, whether you win or lose, as long as you are there at the end of the match, you will ear crucible reputation and marks (less if you lose). You can siphon all reputation earnt into your faction by equiping the faction class armor (this includes bounty reputation and vanguard reputation). Hope this helped! JHX