use glimmer to buy items from the exarch vendor, when you talk to him you'll notice there is a rep bar and level on the left side. Every time you buy something (and he "reveals" it) you gain xp with him, and you need higher levels for the higher green/blue items he sometimes sells.
you can save the items you harvest on the planets for trading into PVE and PVE gear tokens, it takes hundreds of tokens for a single item at 20 so probably good to be turning them in, since you get a little bit of XP each turn in I think.
the beta for PS3/PS4 goes on until the 21st when it goes into maintenance for 2 days, then on the 23th the beta opens up to all consoles (xbox one/360 joins psn) and runs until the 26th. Make sure you login on the 26th, bungie is gonna open up some new stuff including rumor is the Moon, and everyone who plays on the 26th (next saturday) will get a free patch or something that will be on your character when the game goes live.
if you aren't still in a group/clan you can join this one just to see if any clan features open up in the game. I haven't seen anything yet although I did have a patch (?) that I didn't have in alpha
Bungie : Clans : I Aint Got Time To Bleed : Forum | Bungie.net
you can also view your grimoire on the website above (super menu on left side), it opens up a lot of lore and stuff. grimoire is basically achievements
ps3 vs ps4 versions of Destiny comparison, first one is PS3. dat shadow
http://i.minus.com/iYfwM22nvDo2H.png
http://i.minus.com/i9AJXd3WDd6nk.png