When creating a character to apply to any RP guild, one thing to consider is where and how they fit into the world and the timeline. There's a lot of info, and much of it seems to contradict, so it can seem daunting! Revisions can make it even trickier.
We have a lot of folks who know chunks of lore, and you can always ask for help. Some people are more sticklers for it than others, but so long as your story is reasonable and logical, it should be workable to most players. It's just easier for us all to RP together if we're close to being on the same page so far as what happened when, where, and how in regards to general history. Once you have a rough idea of the "rules", it's easier to muck around with them. ;)