Build 3 of same class characters. Get all 3 to lvl 20. Earn Vanguard rank and marks to rank 2. Buy legendary armour - 2 or 3 pieces. Swap armour between characters. Do weekly with all 3. Get strange coin. Buy exotic armour when Xur comes. Upgrade armour to get to lvl 27-28. Do raid with all 3 characters. Get raid gear. Lvl up gear to lvl 30. Delete 1-2 characters and Strt another class if u want. Repeat. Shouldn't take u more thank 3-4 weeks.