if you have played this game since launch then you should know the easiest way to get exotics is buying from xur. oh wait you're only level 24. you have 27 hours under your belt so try to play more and get lucky to get legendaries to get to 27+. that's my only advice to you so you can do nightfalls and do the vog raid w/ legendary gears then move to crota when you get higher.