A large number of things. My family didn’t get the Lego Magazine until mid to late 2008 because we were only aware of the Brickmaster version and that required money. Yes, my siblings and I somehow ignored all the advertising of the free version. Probably shouldn’t have relied on my cousin for that info, but oh well. So the only comics I read where from the last two years and whatever was uploaded to Bionicle.com, which was incomplete.
I had a couple of the books, but didn’t know if there were more or where to get more. Parents weren’t all that willing to make exploration trips either. I had seen all the films, commercials, and various stuff on the website, but outside of set and character descriptions and whatever was also on BionicleStory.com, I relied on Wikipedia.
And oh boy, did that lead to many misconceptions. For me personally, the worst of the bunch involved Tren Krom. I thought he was a Great Being. I knew he was created by the Great Beings and thought they just created an artificial version of themselves…Er, well, still fleshy, but you get my point. An unnatural, lab created version. I used this “fact” when creating my entry for the “Who Am I?” contest, one of many reasons I most certainly didn’t win.