Or if you're a crucible man like me get lots of crucible bounties and do your best to complete them,vanguard bounties are easier but you cannot buy weapons from vanguard,so I would suggest whenever your planning on missions do vanguard,also later on it gets real annoying all of the materials you need to get so you can purchase those with crucible marks(idk about vanguard) so whenever you can grab those materials,spirit bloom...spinmetal....helium filaments....or relic iron.im also willing to help you out level up so send me a msg on 360-Ggammer101