Board Thread:Questions and Answers Forum/@comment-5673350-20150705125611/@comment-4957813-20150705135234

1. Xur, The Speaker, and the Gunsmith take Motes of Light for different things. You can buy Engrams from Xur with the Motes, Legendary Class Items from the Speaker, or reforge your weapons to get a different perk layout with them from the gunsmith

2. You need to rank up your reputation with the vanguard, crucible, and various factions around The Tower to purchase Legendary Gear from them. You can rank up in the factions by purchasing and using a class item from them, the vanguard/crucible reputation will instead go to the faction if you do. You also obtain Legendary Gear through random rewards from activities, etc. Light can also be found on certain Rare equipment.

3. Dismantling the new armor given in the House of Wolves gives you Motes of Light, but I wouldn't recommend doing that unless you don't actually need the piece. Random drops from activities is also a way to get it. There are other ways, but you need to have a much higher light level to be able to do them. Continuing to fight the enemies to get exp. will reward you with a Mote every time you would normally level up from it.

4. No, most vendors would need vanguard or crucible marks to get the legendary gear.

5. Kill mobs, do bounties, heroic missions etc.

6. IDK