I'm giving up for today, i'll probably come back another day. things I've learned without to many spoilers:
I started with a group of 4 items that all go together, the order of the items doesn't seem to matter as i've restarted the game a few times and it always works as long as you connect them in any order.
From there I found another group of 4 items that seemed to go together, they didn't turn to green links when I connected them together, but once I connected that group of 4 to one of the other clues on the other set of 4 all links for the new group went green.
For the second group of clues again order didn't seem to matter when I reset the game and tried it again a few times, however when connecting the 2nd group to the 1st group there were only 2 clues to connect to that would make all the links turn green.
If I continued to play I would keep trying groups of 3, 4, or 5 clues to multiple solved clues on the board, hope that's helpful!