Just do the leveling thing, do story in all the exp packs. Osiris you can skip the weapon grind, they had shit for weapons in todays meta they dont matter. Warmind had a few, the stimulant sleeper(which is still one of the best major/heavy boss killers) and there was a scout rifle too which is nice from the nascent dawn quest line. Forsaken takes you to lv50 and it opens up the draming city which has nice shit and a few powerful rewards per week. ITs nice to get the sleeper as it will be one of the best heavys you have on your way to 750. Key is to level to 50 as fast as possible.
Forges were the next DLC and its a bit of a grind to open them all up but worth. There is a few exotics there and the weapons you can grind a few every week, great pulse rifle, great HMG, void hand cannon can be done over and over again once you unlock them for the god rolls or curated rolls. There is also a bow an AR and sword. Not sure what the meta on console is but they work like this, pick up a frame, do a few things to complete it, then run the forge for the reward. And you can do this over and over again to grind out the sweet rolls. (TLW exotic quest)
The next DLC was the drifter shit, thorn HC, and some other shit, but to tell you the truth what im hearing is that it was a huge grind for the drops so I never really did it too much.
The current is the menagerie, do a thing like the strike (cannot fail) and collect rewards. Great primary HC, great sniper, and some other shit to grind for like armor you can basically set rolls for (for instance hunters can roll more recovery on their gear) Also Truth quest and supposedly some new exotic HC next week.
Oh I forgot, once you hit 50 go see the oppulance bot either in tower or on nessus, he will give you quest/ blues to get you to 690.