R.K. Meades said:
Look for a sherpa. The best PvE content - high-level strikes, and the raids - are best enjoyed with a good fireteam. The official Destiny sub, r/destinythegame, has a big thread every week for people in your situation.
it still baffles me that Destiny doesn't have a way to do this in game. If you want access to "the heart of destiny and the best loot" you gotta put your controller down, crawl over to an internet source and post on a forum or search through it looking for a group around your level willing to do your thing, and then wait for everyone to get ready, instead of just having a function for it in game.
Back on topic, and I hope it's not too late, but judging by your use of the word "Trial," you dont have the actual game, and just lost money buying the EXPANSION, which costs 40 bucks and doesn't come with the base game. And if that is the case, you better do all you can to return that before you have to pay even more money just buying the base game and not getting the "complete edition" first. Plus, I think you actually need the other 2 "expansions" to even access the Taken King.
If I'm wrong and you actually managed to get complete edition for 40 bucks, good on you, that's about what the game is actually worth in it's entirety.
Personal thoughts from someone who never bought the seasons pass, and thus never forced myself to play the game like many other people to make my purchase worthwhile, holy shit this game is so damn boring. Pretty much everything you did in the trial is unchanged in the actual game, only you just shoot more of the same enemies, walking through the same paths over and over again as you do the same bounties/fireteam activities day after day, hour after hour. Year 1 of destiny was the god damn worst, and if I chose to put the disk in today, I would actually be able to do LESS in the game than I could in the first few months of the game because of how much stuff gets locked behind the DLC walls and the "updates" that the expansions have brought.
EDIT: oh right, I just remembered one of the biggest mistakes that Destiny made. The fucking Grimoire. Do you want to know what it is your fighting, who that person you bought that shitty gun from was, who is the traveller, why are there things on the moon, and any other questions like that? Well once again, you have to put your controller down, go to the internet, go to destiny forums, log in and wait for it to sync with your account, and THEN you can look at the glossary for shit in this game, provided you killed 100/500/3000/10000 of every enemy, including other guardians.
Why couldn't there have been a library section in the tower to do this sort of thing, it's full of wasted empty space so its not like there's no room for it. For fuck sakes, The Watchers room probably would have been perfect if it had a terminal for this shit, but no. All the backstory on characters and enemies isn't even a part of the actual game, it's just a wiki that gets more and more filled as you kill (literally) thousands of a single enemy for basically a collectible card with info/stats.