do crucible, u can reach 24. can get all lvl 20 rare gears there.
go queen's wrath. can get 2 leg helm and chest there.
rank up vanguard and crucible to rank 3. buy leg gears from there.
save 13 strange coins to buy an exotic armor piece from xur to increase light level
if u want save 23 mote of light buy exotic engram from xur. have to gamble for your class
do bounties for exotic bounty. that give exotic weapon as reward. (thorn, badjuju, pocket infinity, invectus, super good advice.) **i've done 3. doing the 4th

do public event coins & shards
do daily, weekly and nightfall when able for coins & shards
can attempt for VoG templar around 25. recommended 26
can attempt for VoG atheon around 27. recommended 28