Ok I reached level 20 today with my Warlock now what do I do? I did switch to the subclass and have added a few perks to that. Where do I find this "light" I kep hearing about? And if level 20 is the max level why do I see higher lever players running around?
Play through the strike playlists, keep doing bounties/patrols, and participate in public events (see previous pages for map of Earth times). If you have friends to play with, try the daily and weekly heroic strikes (which earn you coins).
By maxing out your vanguard marks (100/week) and vanguard rep you can pretty much buy a legendary or two every week from the Vanguard vendor. Doing the events above earn you coins and motes of light which you can use at the special vendor Xur to buy exotic gear (he appears Friday morning through Sunday morning).
If you are into pvp, you can earn crucible marks (max 100/week as well - you get 3 per win/2 per loss) and rep which lets you buy different legendaries from the crucible vendor. Additionally you can gather materials from each planet during your patrols and turn in 50 at a time for rep.
If you are interested in getting gear that has a specific stat (ex: strength), join a faction by purchasing and equipping their special item (costs 2500 glimmer iirc) - doing this will cause all of your crucible and vanguard rep gain to change to faction rep gain instead, and work towards meeting requirements to buy those items.
When you hit level 3 with a specific faction/vanguard/crucible you will receive a reward of either a faction legendary or rare upgrade materials.
Alternatively you can go to "farm spots" but I recommend maxing out your weeklies first as those net you guaranteed returns for a couple of hours of work a day rather than relying on rng.
