Yup, do strikes and pvp until you can get yourself to level 28 or so. Should be able to buy a piece of gear from the vanguard/crucible vendor to help ya out with all the marks you get.
Then try one of the raids (normal vog, or normal crota), ascend some gear, run PoE, get more etheric light, PoE vendor armor.... and you'll be 34 on no time
If you want to just get some legendary armor and weapons quickly then just playing Crucible works. You can use Crucible Marks to buy legendary armor, and legendary weapons will pour in from random drops during the matches.
Strike playlist only becomes good IMO once you get to Level 28 and can do the Dragon Playlist with a guaranteed engram. But leving up to 28 through crucible is quick and easy.
Edit: by the way Stranger's Rifle is now a top-tier Pulse Rifle for normal crucible thanks to balance changes earlier this year that buffed PRs, so assuming you have that gun from the story you may want to try using it in Crucible, should be a three-burst kill. Not as good as Thorn or TLW but still very competitive for typical crucible matches.
Great, thanks a lot for the advice. I may have the Stranger's Rifle, and might already be using it. I'll have to check lol. I think I'll probably continue with the Crucible matches as I prefer those.