Board Thread:Questions and Answers Forum/@comment-212.47.15.98-20151228125858/@comment-25916964-20160104112526

If you don't have The Taken King, then the highest you'll get is probably 170 Light. If you do have it then continue levelling up to level 40 and go through the quests. The rewards for them help to push your light higher, with a few having up to 300. Also, when decrypting engrams, your current light level influences the stats of gear you get. So maximise your Light when decrypting stuff. Other than this, just play the game. Higher level activities generally give better rewards though.